Loyola College Question Paper 2009

Loyola College B.Sc. Physics April 2009 Electricity & Magnetism Question Paper PDF Download

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      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

XC 50

FIFTH SEMESTER – April 2009

PH 5505 / 4500 – ELECTRICITY & MAGNETISM

 

 

 

Date & Time: 24/04/2009 / 1:00 – 4:00  Dept. No.                                                  Max. : 100 Marks

 

 

PART – A

Answer all questions.All questions carry equal marks.      (10 x 2 = 20marks)

 

  1. Define electric dipole moment.
  2. Define the capacitance of a capacitor.
  3. What is thermo electric power?
  4. A reversible cell has an emf of 1 volt at 0 0 C. Assuming that the energy provided by the chemical reactions occurring in the cell amounts to 1.092 J/C, calculate the change in its emf when its temperature rises to 10 C.
  5. Define ampere.
  6. What is Coefficient of coupling ?
  7. If the charge on a capacitor of capacitance is leaking through a high resistance of 100 megaohms is reduced to half its maximum value, calculate the time of leakage.
  8. Differentiate series resonant circuit from parallel resonant circuit.
  9. Mention any two properties of dia magnetic materials.
  10. What is curie temperature ?

 

PART – B

Answer any four questions.                                                         (4×7.5=30marks)

 

  1. Obtain expressions for electric potential and electric field at any point due to a dipole.
  2. Describe the experimental method of determination of specific conductivity of an

electrolyte using kohlrausch bridge.

  1. Derive an expression for the flux density at a point inside a solenoid.
  2. a) Write a note on choke coil (4 marks)
  3. b) A coil has an inductance of 0.1 H and a resistance of 12 ohms. It is connected

to a 220V, 50Hz mains. Determine the (1) reactance of the coil, (2) impedance

of the coil.                                                                                      (3.5 marks)

  1. Using Maxwell’s equations determine the velocity of electromagnetic waves in

free space.

PART – C

Answer any four questions.                                                        (4×12.5=50marks)

 

  1. a) Find an expression for the capacity of a cylindrical condenser.               (7.5 marks)
  2. b) A co-axial cable consists of a copper core of 1mm radius within an outer metal

sheath of 1cm. radius separated by an insulating material of dielectric constant

  1. What is the capacitance per metre length of the cable in pico-farad? (5marks)
  2. Define Peltier and Thomson coefficients and derive expressions for them.
  3. a) Describe the construction of a moving coil galvanometer and derive an expression

for the quantity of charge flowing through it.                                          (9 marks)

  1. b) The successive throws on the same side of the mean position for an oscillating

coil are 25, 24.9 and 24.8 cm. Calculate the logarithmic decrement.       (3.5 marks)

  1. Discuss the growth and decay of charge in an LCR circuit.
  2. Discuss the Langevin’s theory of paramagnetism.

 

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Loyola College B.Sc. Physics April 2009 Atomic And Nuclear Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

XC25

FIFTH SEMESTER – April 2009

PH 5504 – ATOMIC AND NUCLEAR PHYSICS

 

 

 

Date & Time: 16/04/2009 / 9:00 – 12:00       Dept. No.                                                       Max. : 100 Marks

 

 

PART-A

 

Answer ALL questions:                                                                             (10 x 2 = 20 marks)

 

  1. What are the possible values for angular momentum in units of ħ for an electron in l = 1 state?
  2. What is anomalous Zeeman effect?
  3. State Geiger-Nuttal law.
  4. Why should the spin of the neutrino have half integral value?
  5. Give the Lawson criteria for nuclear fusion.
  6. What are magic numbers?
  7. Name the Four types of fundamental
  8. What is Larmor precession?
  9. What is the frequency of NMR radiation between two equally populated levels of spin ½ systems.
  10. Name the types of quarks. Give the quark contents of proton and neutron.

 

PART-B

Answer any FOUR questions:                                                                   (4 x 7.5 = 30 marks)

 

  1. Derive the expression for change in wave length due to Compton effect.
  2. a). Describe the various components of a nuclear reactor. (6 Marks)

b). What is a breeder reactor?                                               (1.5 Marks)

  1. Obtain the expression for transmission probability for alpha particles through a radioactive uclei..
  2. Explain the Yukawa’s theory of nuclear forces, Establish that the particle which mediate the nuclear force is 275 times heavier than electron.
  3. a). Discuss the effect of earth’s magnetic field on cosmic rays

b). What are Van Allen belts?

PART-C

Answer any FOUR questions:                                                                   (4 x 12.5 = 50 marks )

 

  1. Describe Thompson’s parabola method to determine the e/m value for a positive ion. How does one find the ratio of masses for positive ions using this method?
  2. Explain liquid drop model for the nucleus and hence arrive at the Weizacker binding energy formula for a nucleus.

 

 

 

  1. a). Define the binding energy of a nucleus. (2)

b). Calculate the binding energy for a α- particle, Given mp = 1.007276u , mn= 1.008665u &

mα = 4.001506 u. (3)

c). Discuss the binding energy per nucleon and packing factor verses mass number curves. (7.5)

 

  1. a) Describe the shell model for nuclei. (5).

b). Discuss the classification of elementary particles. (5)

c).State various conserved quantities associated with elementary particle interactions.(2.5)

 

  1. a) Describe the interaction between nuclear magnetic moment and the magnetic field and explain how this leads to NMR radiation. (6.5)

b). What is Chemical effect in NMR?. (3)

c). What is Mossbauer effect? (3)

 

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Loyola College B.Sc. Physics April 2009 Atomic & Nuclear Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

XC25

FIFTH SEMESTER – April 2009

PH 5504 – ATOMIC AND NUCLEAR PHYSICS

 

 

 

Date & Time: 16/04/2009 / 9:00 – 12:00       Dept. No.                                                       Max. : 100 Marks

 

 

PART-A

 

Answer ALL questions:                                                                             (10 x 2 = 20 marks)

 

  1. What are the possible values for angular momentum in units of ħ for an electron in l = 1 state?
  2. What is anomalous Zeeman effect?
  3. State Geiger-Nuttal law.
  4. Why should the spin of the neutrino have half integral value?
  5. Give the Lawson criteria for nuclear fusion.
  6. What are magic numbers?
  7. Name the Four types of fundamental
  8. What is Larmor precession?
  9. What is the frequency of NMR radiation between two equally populated levels of spin ½ systems.
  10. Name the types of quarks. Give the quark contents of proton and neutron.

 

PART-B

Answer any FOUR questions:                                                                   (4 x 7.5 = 30 marks)

 

  1. Derive the expression for change in wave length due to Compton effect.
  2. a). Describe the various components of a nuclear reactor. (6 Marks)

b). What is a breeder reactor?                                               (1.5 Marks)

  1. Obtain the expression for transmission probability for alpha particles through a radioactive uclei..
  2. Explain the Yukawa’s theory of nuclear forces, Establish that the particle which mediate the nuclear force is 275 times heavier than electron.
  3. a). Discuss the effect of earth’s magnetic field on cosmic rays

b). What are Van Allen belts?

PART-C

Answer any FOUR questions:                                                                   (4 x 12.5 = 50 marks )

 

  1. Describe Thompson’s parabola method to determine the e/m value for a positive ion. How does one find the ratio of masses for positive ions using this method?
  2. Explain liquid drop model for the nucleus and hence arrive at the Weizacker binding energy formula for a nucleus.

 

 

 

  1. a). Define the binding energy of a nucleus. (2)

b). Calculate the binding energy for a α- particle, Given mp = 1.007276u , mn= 1.008665u &

mα = 4.001506 u. (3)

c). Discuss the binding energy per nucleon and packing factor verses mass number curves. (7.5)

 

  1. a) Describe the shell model for nuclei. (5).

b). Discuss the classification of elementary particles. (5)

c).State various conserved quantities associated with elementary particle interactions.(2.5)

 

  1. a) Describe the interaction between nuclear magnetic moment and the magnetic field and explain how this leads to NMR radiation. (6.5)

b). What is Chemical effect in NMR?. (3)

c). What is Mossbauer effect? (3)

 

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Loyola College B.Sc. Physics Nov 2009 Atomic & Nuclear Physics Question Paper PDF Download

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   LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

XC 19

FIFTH SEMESTER – April 2009

PH 5500 – ATOMIC & NUCLEAR PHYSICS

 

 

 

Date & Time: 16/04/2009 / 9:00 – 12:00    Dept. No.                                                       Max. : 100 Marks

 

 

PART A

Answer all questions.  All questions carry equal marks.                           (10 x 2 = 20 marks)

  1. Define excitation potential.
  2. State Pauli’s exclusion principle.
  3. What is photoelectric effect?
  4. Find the minimum wavelength of x-rays produced by an x-ray tube operated upon 1000V.

(h = 6.625 x 10-34 JS,  e = 1.602 x 10-19c,   c = 2.998 x 108 m/s)

  1. Define mass defect and packing fraction.
  2. State Geiger-Nuttal law.
  3. Define half-life period.
  4. Distinguish between controlled and uncontrolled chain reaction?
  5. Write the expression for semi empirical mass formula.
  6. What are cosmic ray showers?

 

PART B

Answer any four questions.                                                                         (4 x 7.5 = 30 marks)

  1. Describe Aston’s mass spectrograph.
  2. The wavelength of Lα x-ray line platinum (atomic no.78) is 1.321Å . An unknown substance

emits Lα X-rays of wavelength 4.174Å .  Calculate the atomic number of the unknown

substance.  Given b = 7.4 for Lα lines.

  1. Using Rabi’s method how nuclear magnetic moment is determined?
  2. Explain the methods of detection of neutron.
  3. Explain yukawa’s meson theory of nuclear forces.

 

PART C

Answer any four questions.                                                                         (4 x 12.5 = 50 marks)

  1. a)Describe the Stern and Gerlac experiment and indicate the importance of the results

obtained.                                                                                                                                         (10)

b)Distinguish between anomalous and normal Zeeman effect.                                            (2.5)

  1. Explain the different types of photoelectric cells and mention their uses. (4+4+4.5)
  2. Explain the theory of β decay in detail.
  3. a) Describe the construction and explain the function of nuclear reactor. (9)
  4. b) Fine the energy released in fusion during the formation of helium nuclei.

1H2 = 2.014102 amu   2He4 = 4.002604 amu.                                                                   (3.5)

  1. a) Explain the classification of elementary particles. (8)
  2. b) Discuss the conservation laws.     (4.5)

 

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Loyola College B.Sc. Mathematics April 2009 Real Analysis Question Paper PDF Download

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   LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 29

FIFTH SEMESTER – April 2009

MT 5505 / 5501 – REAL ANALYSIS

 

 

 

Date & Time: 16/04/2009 / 9:00 – 12:00       Dept. No.                                                       Max. : 100 Marks

 

 

SECTION-A

 

Answer all questions:                                                                        (10 x 2=20)

 

  1. Define an order – complete set and give an example of it.
  2. When do you say that two sets are similar?
  3. Define discrete metric space.
  4. Give an example of a perfect set in real numbers.
  5. Define open map and closed map.
  6. When do you say that a function is uniformly continuous?
  7. If a function f is differentiable at c, show that it is continuous.
  8. Define “total variation” of a function f on [a,b].
  9. Give an example of a sequence {an}whose lim inf and lim Sup exist, but the sequence is not convergent.
  10. Give an example of a function which is not Riemann Stieltjes integrable.

 

SECTION-B

 

Answer any five questions:                                                              (5 x 8=40)

 

  1. Let a,b be two integers such that (a,b)=d. Show that there exists integers  such that .
  2. Show that the set of all real numbers is uncountable.
  3. Let E be a subset of a metric space X. Show that  is the smallest closed set containing E.
  4. State and prove Heire Borel theorem.
  5. Show that in a metric space every convergent sequence is Cauchy, but not conversely.
  6. Let f, g be differentiable at Show that f  g  is differentiable at c and if is also differentiable at c.
  7. State and prove Lagrange’s mean valve theorem.
  8. Suppose {an}is a real sequence. Show that lim Supan=l if and only if for every ,
  • there exists a positive integer N such that for all and
  • given any positive integer m, there exists an integer such that .

 

 

 

 

 

 

SECTION-C

 

Answer any two questions:                                                                          (2 x 20=40)    

 

  1. (a) State and prove Minkowski’s inequality.

(b) Show that there is a rational number between any two distinct real numbers.

(c) If show that e is irrational.

  1. (a) If F is a family of open intervals that covers a closed interval [a,b], show that a finite sub family of F also covers [a,b].

(b) Let SÌRn. If every infinite subset of S has an accumulation point in S, show that S is closed and bounded.

  1.  (a) Let (X,d1), (Y, d2) be metric spaces and . Show that f is continuous at if and only if for every sequence in X that converges to  the sequence converges to .

(b) State and prove Bolzano theorem.

 

  1. (a) State and prove Taylor’s theorem.

(b) Suppose on [a,b]. Show that on [a,b] and

 

 

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Loyola College B.Sc. Mathematics April 2009 Operations Research Question Paper PDF Download

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         LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 31

FIFTH SEMESTER – April 2009

MT 5507 / 5504 – OPERATIONS RESEARCH

 

 

 

Date & Time: 17/04/2009 / 9:00 – 12:00    Dept. No.                                                       Max. : 100 Marks

 

 

SECTION A

Answer  ALL  Questions                                                                               (10 x 2 = 20)

 

  1. Write down any two uses of Operations Research.
  2. Define Slack variables.
  3. Which is the necessary and sufficient condition for the transportation problem to have

a feasible solution?

  1. Describe a traveling salesman problem.
  2. What is meant by mixed strategy?
  3. What is the value of the game?
  4. Define Total float
  5. Explain: Minimal Spanning tree problem?
  6. Give any two reasons for maintaining inventory
  7. Define Recorder level.

 

SECTION B

Answer ANY FIVE Questions.                                                                     (5 x 8 = 40)

 

  1. Solve the following Linear Programming Problem by graphical method

Maximize  Z = 5x1 + 8x2

Subject to:

15x1 + 10x2  ≤  180

10x1 + 20x2  ≤  200

15x1 + 20x2  ≤  210

and x1, x2  ≥ 0

  1. Use simplex method to solve the following LPP

Maximize  Z = 4x1 + 10x2

Subject to:

2x1 + x2  ≤  50

2x1 + 5x2  ≤  100

2x1 + 3x2  ≤  90

and x1, x2  ≥ 0

 

  1. Find the initial basic feasible solution for the following transportation problem
D1 D2 D3 D4 Supply
S1 21 16 25 13 11
S2 17 18 14 23 13
S3 32 27 18 41 19
Demand 6 10 12 15

 

 

 

 

 

 

 

  1. Write the algorithm for solving Assignment problem.

 

  1. Solve the following game using dominance property.

 

I II III Row mini.
I 1 7 2 1
II 6 2 7 2
III 6 1 6 1
Column max. 6 7 7

 

 

 

 

 

 

  1. Draw the network for the project whose activities with their predecessor relationships

are given below:

A, C, D can start simultaneously; E >B, C;  F, G >D;  H, I > E ,F ; J >I, G ;

K > H; B > A.

 

  1. The annual demand of a product is 10,000 units, each unit cost Rs.100 if orders

placed in quantities below 200 units but for orders of 200 or above, the price is Rs.95,

the annual inventory holding cost is 10% of the value of the item, and the ordering

cost is Rs.5 per order. Find the economic lot size.

 

  1. The demand for an item in a company is 18,000 units per year and the company can

produce the item at a rate of 3000 per month. The cost of one set up is Rs. 500 and

the holding cost of one unit per month is 15 paise. The shortage cost of one unit is

Rs. 20 per month. Determine the optimum manufacturing quantity and the number

of shortage. Also determine the manufacturing time and time between setups.

 

 

SECTION C

Answer ANY TWO Questions.                                                                      (2 x 20 = 40)

  1. Solve the following Linear Programming Problem by Dual Simplex method

Minimize  Z = x1 + x2

Subject to:

2x1 + x2  ≥ 2

-x1 – x2 ≥ 1

and x1, x2  ≥ 0

 

  1. (a) Solve the following transportation problem using Least Cost Method to find the

Initial Basic Feasible solution.

 

A1 A2 A3 A4 A5 Supply
B1 4 1 2 6 9 100
B2 1 4 7 3 8 120
B3 7 2 4 7 7 120
Demand 40 20 70 90 90

.

 

 

 

(b)Solve the following traveling sales man problem

 

M1 M2 M3 M4 M5
J1 9 22 58 11 19
J2 43 78 72 50 63
J3 41 28 91 37 45
J4 74 42 27 49 39
J5 36 11 57 22 25

(10 + 10)

  1. (a) Solve the following game graphically
  B1 B2 B3 B4
A1 1 0 4 -1
A2 -1 1 2 5

 

(b) In a game of matching points with 2 players suppose A wins one unit value when

there are 2 heads, wins nothing when there are 2 tails, and loses  ½ unit value when

there are 1 head and 1 tail. Determine the pay-off matrix, the best strategy for each

player and the value of the game.                                                        (10+10)

 

22    (a) Draw the network, determine the critical path , project duration and the total float for the

following activities .

 

Activity 1-2 2-3 3-4 3-7 4-5 4-7 5-6 6-7
Duration 3 4 4 4 2 2 3 2

 

(b) ABC manufacturing company purchases 9,000 parts of a machine for its annual

requirement, ordering one month’s usage at a time. Each part costs Rs.20.

The ordering cost per order is Rs.15, and the carrying charges are 15% of the

average inventory per year.

You have been asked to suggest a more economical purchasing policy for the

company. What advice would you offer and how much would it save the company

per year?                                                                                  (10+10)

 

 

 

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Loyola College B.Sc. Mathematics April 2009 Numerical Methods Question Paper PDF Download

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        LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 38

SIXTH SEMESTER – April 2009

MT 6605 – NUMERICAL METHODS

 

 

 

Date & Time: 23/04/2009 / 9:00 – 12:00 Dept. No.                                                     Max. : 100 Marks

 

 

 

PART – A (10 ´ 2 = 20)

Answer ALL questions.

 

  1. What do you mean by partial pivoting?
  2. State Cramer’s rule.
  3. What is the order of convergence in Newton-Raphson method?
  4. Explain bisection method.
  5. What is meant by interpolation?
  6. Write the error polynomial in the Newton’s forward interpolation formula?
  7. Write the Stirling’s central difference interpolation formula.
  8. Write any two advantages of central difference interpolation formula.
  9. What is the order of error in the Trapezoidal rule?
  10. Write the formula for third order Range-Kutta method.

 

PART – B (5 ´ 8 = 40)

Answer any FIVE questions.

  1. Solve the following system of equations by Gauss elimination method

28x + 4y – z = 32,       x + 3y + 10z = 24    and     2x + 17y +4z = 35.

  1. Solve for a positive root of x3 – 4x + 1 = 0 by Regula Falsi method.
  2. Write a C program to for Lagrange’s interpolation formula.
  3. Obtain Newton’s forward interpolation formula for equal intervals.
  4. Find the first two derivatives of at x = 50 and x = 56 given the table below:

x                        :              50            51              52          53           54           55             56

:           3.6840     3.7084      3.7325    3.7563   3.7798     3.8030      3.8259

 

  1. Use Laplace-Everett’s formula to obtain f(1.15) given that f(1) = 1, f(1.1) =1.049,  f(1.2) = 1.096, f(1.3) = 1.14.
  2. Evaluate by        (i) Trapezoidal rule      (ii) Simpson’s 1/3  rule   and

(iii) Simpson’s 3/8 rule.

  1. Solve in the range 0 £ x £2 using (i) Euler’s method  (ii) improved Euler’s method

 

 

 

 

 

PART – C (2 ´ 20 = 40)

Answer any TWO questions.

  1. (a) Solve by Gauss-Seidel Method, the following system of equations.

                                    28x + 4y – z = 32,      

                                    x + 3y + 10z = 24,     

                        and      2x + 17y + 4z = 35

(b) Find the real positive root of 3x – cos x – 1 = 0 by Newton-Raphson method correct to 6 decimal places.

  1. (a) From the following table find f(x) and hence f(6) using Newton’s divided difference formula.

x          :           1             2            7             8

                        f(x)       :           1             5            5             4

  • The following table gives the value of density of saturated water for various temperatures of saturated stream.

Tempo C ( = T)            :           100      150      200      250      300

Density hg/m3 (= d)     :           958      917      865      799      712

      Find by interpolation, the densities when the temperatures are 130oC and 275oC respectively.

 

  1. (a) Using Gauss’s forward interpolation formula, find the value of log 337.5 from the following table.

x                 :              310           320            330            340          350          360

       yx = log x        :           2.4914       2.5052       2.5185      2.5315      2.5441   2.5563

  • Using Bessel’s formula, find the derivative of f(x) at x = 3.5 from the following table.

x          :           3.47     3.48     3.49     3.50     3.51     3.52     3.53

f(x)       :           0.193   0.195   0.198   0.201   0.203   0.206   0.208

  1. (a) Using Range-Kutta method of fourth order, solve for y(0.1) and y(0.2) given that                 y¢ = xy + y2, y(0) =1.

(b)  Develop a C program to implement Simpson’s 3/8 rule.

 

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Loyola College B.Sc. Mathematics April 2009 Modern Algebra Question Paper PDF Download

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       LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 16

FOURTH SEMESTER – April 2009

MT 4502 / 4500 – MODERN ALGEBRA

 

 

 

Date & Time: 24/04/2009 / 9:00 – 12:00  Dept. No.                                                   Max. : 100 Marks

 

 

PART – A

Answer ALL the questions:                                                                                        (10 x 2 = 20)

1.)     Define an equivalent relation on set A.

2.)     Define a partially ordered set.

3.)     Define a cyclic group.

4.)     If G is a group of order n and a Î G, show that an = e.

5.)     Define an automorphism of a group.

6.)     Define the alternating group of degree n.

7.)     Define a ring.

8.)     Define a field.

9.)     Define an ordered integral domain.

10.)   Define a maximal ideal of a ring.

PART – B

Answer any FIVE questions:                                                                                         (5 x 8= 40)

11.)   If G is a group, prove that

a.) the identity element of G is unique

b.) every a Î G has a unique inverse in G.

12.)   Show that the union of two subgroups of G is a subgroup of G if and only if one is contained in the other.

13.)   Prove that every subgroup of a cyclic group is cyclic.

14.)   If a and b are elements of a group and a5 = e, b4 = e, ab = ba3, prove that

(i)  a2b = ba        and               (ii) ab3 = b3a2.

15.)   Show that a subgroup N of a group G is a normal subgroup of G if and only if every left coset of N in G is a right coset of N in G.

16.)   If f is a homomorphism of a ring R into a ring R′, then prove that the kernel of f is an ideal
of R.

17.)   Prove that the intersection of two subrings of a ring is a subring.

18.)   Prove that an element a in a Euclidean ring R is a unit if and only if d(a)= d(1)

PART – C

Answer any two questions:                                                                                            (2 x 20 = 40)

19.)   State and prove the fundamental theorem of arithmetic.

20.) (a) State and prove Lagrange’s theorem.

(b) Let H be a subgroup of index 2 in a group G.  Prove that H is a normal subgroup.  (15+ 5)

21.) (a) State and prove the fundamental theorem of homomorphism on groups

(b) Define an integral domain and a division ring                                                            (14+ 6)

22.)   State and prove unique factorization theorem.

 

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Loyola College B.Sc. Mathematics April 2009 Mechanics – II Question Paper PDF Download

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 LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 37

SIXTH SEMESTER – April 2009

MT 6604 – MECHANICS – II

 

 

 

Date & Time: 21/04/2009 / 9:00 – 12:00 Dept. No.                                                Max. : 100 Marks

 

 

PART – A

Answer ALL the questions:                                                             (10 x 2 = 20)

 

  1. Define centre of mass.
  2. Write down the formula for the C.G of a rigid body.
  3. State the principle of virtual work.
  4. Define suspension bridges.
  5. Define Simple Harmonic motion.
  6. Define second pendulum.
  7. Write down the components of the acceleration of a particle in polar coordinates.
  8. Define central orbit.
  9. State the theorem of perpendicular axes.
  10. State D’Alembert’s principle.

PART – B

Answer any FIVE questions:                                                                       (5 x 8 = 40)

 

  1. A piece of uniform wire is bent in the shape of an isosceles triangle whose sides are a, a and b. Show that the distance of the C.G from the base of the triangle is .
  2. Find the C.G of a uniform solid right circular cone.
  3. A regular hexagon is composed of six equal heavy rods freely jointed together and two opposite angles are connected by a string which is horizontal, one rod being in contact with a horizontal plane; at the middle point of the opposite rod a weight W’ is placed. If W be the weight of each rod, show that tension in the string is .
  4. Find the equation of the catenary in the Cartesian farm.
  5. A particle moves in SHM in a straight line. In the first second, after starting from rest, it travels a distance ‘a’ and in the next second, it travels a distance ‘b’ in the same direction. Prove that the amplitude of the motion is .
  6. Determine the maximum speed with which a car can turn round a level curve of radius 100 meters without slipping given that the coefficient of friction between the tyres and the track is 0.3.
  7. Derive the Pedal equation or p-r equation of a central orbit.
  8. Find the M.I of a hollow sphere.

 

 

                                                                   

                                                                 

PART – C

Answer any TWO questions:                                                                       (2 x 20 = 40)

 

  1. (a) Find the C.G of the area enclosed by the parabolas .

(b) ABCDEF is a regular hexagon formed of light rods smoothly jointed at their ends with a

diagonal rod AD. Four equal forces ‘P’ act inwards at the middle points of the rods AB, CD, DE, FA  and at right angles to the respective sides. Find the stress in the diagonal AD and state whether it is a tension or a thrust.                                                  (10+10)

  1. (a) A string of length 2l hangs over two small smooth pegs in the same horizontal level. Show

that if h is the sag in the middle, the length of either part of the string that hangs vertically is

.

(b) Find the resultant of two simple harmonic motions of the same period in the same straight

line.                                                                                                            (10+10)

  1. (a) State and prove the theorem of parallel axis.

(b) Find the M.I of the square lamina about a diagonal of length l.   (10+10)

  1. (a) A particle acted on by a central attractive force is projected with a velocity at an

angle of with its initial distance ‘a’ from the centre of force. Show that the path is the equiangular spiral .

(b) A square lamina of side 2a rotates in a vertical plane about a horizontal axis passing through

one of the vertices and perpendicular to its plane and a weight equal to that of lamina is placed at the opposite vertex. Find the length of S.E.P.                        (10+10)

 

 

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Loyola College B.Sc. Mathematics April 2009 Mechanics – I Question Paper PDF Download

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      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 15

FOURTH SEMESTER – April 2009

MT 4501 – MECHANICS – I

 

 

 

Date & Time: 02/05/2009 / 9:00 – 12:00 Dept. No.                                                   Max. : 100 Marks

 

 

 

PART – A

Answer ALL the questions:                                                                            10 x 2 = 20     

 

  1. When do you say a concurrent system of forces is in equilibrium?
  2. State the converse of Lami’s theorem.
  3. Define moment of a force.
  4. When do you say two unlike parallel forces form a couple?
  5. Write down the components of the acceleration of a particle in the tangential and normal directions.
  6. A ship is steaming north at and a man walks across its deek in a direction due west at 8 k.m.p.h. Find its resultant velocity in space.
  7. State the principle of conservation of momentum.
  8. Define coefficient of restitution.
  9. Define (i) trajectory and (ii) horizontal range
  10. Define limiting velocity.

 

PART – B

Answer any FIVE questions:                                                             5 x 8 = 40

 

  1. State and prove Lami’s theorem.
  2. A weight W hangs by string and is drawn aside by horizontal force until the string makes an angles 60o with the vertical. Find the horizontal force and the tension in the string.
  3. Find the resultant of two unlike parallel forces.
  4. State the laws of friction.
  5. A ship sails north-east at 15 kmph and to a passenger on board, the wind appears to blow from north with velocity of Find the true velocity of the wind.
  6. A particle is dropped from the top of a tower and describes during the last second of its fall (9/25) of the height of the tower. Find the height of the tower.
  7. A particle projected from the top of a wall 50 m. high, at an angle of 30o above the horizon, strikes the level ground through the foot of the wall at an angle of 45o. Show that the angle of depression of the point of striking the ground from the point of projection is .

 

 

 

 

  1. A particle is projected from a point in a smooth fixed horizontal plane with velocity is at an elevation a. Show that the particle ceases to rebound from the plane at the end of time and that the total horizontal distance described in this period is .

PART – C

Answer any TWO questions:                                                              2 x 20 = 40

 

  1. a) Three equal strings of no sensible wei0ght are knotted together to form an equilateral and a weight W is suspended from A. If the triangle and the weight be supported with BC horizontal by means of two strings at B and C each at an angle 135o with BC, show that the tension in BC is .
  2. b) The top of a pole is held by means of four horizontal wires which enert the following tensions: 20 lbs weight due North, 30 lbs weight due East, 40 lbs weight due South West and 50 lbs weight due South East. Find the magnitude and direction of the resultant pull on the post.
  3. a) Discuss the equilibrium of a particle on a rough inclined plane acted on by an external force.
  4. b) A uniform ladder rests at the angle 45o with its upper extremity against a rough vertical wall and its lower extremity on the ground. If be the coefficients of friction between the ladder and the ground and the wall respectively, show that the least horizontal force which will move the lower extremity towards the wall is where W is the weight of the ladder.
  5. Obtain the equation of the path of a projectile in Cartesian form. Also determine the time of flight, greatest height and horizontal range.
  6. Two smooth spheres of masses m1 and m2 moving with velocities u1 and u2 imping directly. Obtain
  7. the motion after impact
  8. the impulse imparted to each other due to impact
  • the change is kinetic energy due to impact.

 

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Loyola College B.Sc. Mathematics April 2009 Mechanics – I Question Paper PDF Download

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  LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 30

FIFTH SEMESTER – April 2009

MT 5506 – MECHANICS – I

 

 

 

Date & Time: 24/04/2009 / 1:00 – 4:00  Dept. No.                                                   Max. : 100 Marks

 

 

PART – A

Answer ALL the questions                                                                             (10 x 2 = 20 marks)

 

  1. Define coplanar forces.
  2. State the law of parallelogram of forces.
  3. Define couple.
  4. State the theorem on “equilibrium of three coplanar forces”.
  5. State the principle of conservation of linear momentum.
  6. Define angular velocity.
  7. State Newton’s laws of motion.
  8. Define horizontal range of a projectile.
  9. Define impulsive force.
  10. Define the coefficient of elasticity.

PART – B

Answer any FIVE questions                                                                     (5 x 8 = 40 marks)

 

  1. State and prove Lami’s theorem.
  2. A weight bar hangs by a string and is drawn aside by a horizontal force until the strings makes an angle 60o with the vertical.  Find the horizontal force and the tension in the string.
  3. A straight rod PQ of length ‘2a’ and weight ‘W’ rests on smooth horizontal pegs R and S at the same level at a distance ‘a’ apart.  If two weights p w and q w are suspended from P and Q respectively, show that, when the reactions at R and S are equal the distance PR is given by .
  4. Two rough particles connected by a light string rest on an inclined plane.  If their weights and corresponding coefficients of friction are W1, W2 and µ1, µ2 respectively and , where α is the inclination of the plane with the horizon, prove that , if both particles are on the point of moving down the plane.
  5. A and B describe concentric circles of radii ‘a’ and ‘b’ with speeds u and v, the motion being the same way round.  If the angular velocity of either with respect to the other is zero, prove that the line joining them subtends at the centre an angle whose cosine is .
  6. Show that when masses P and Q are connected by a string over the edge of a table, the tension is the same whether P hangs and Q is on the table or Q hangs and P is on the table.
  7. A particle is projected so as to graze the tops of 2 walls, each of height 20 feet, at distances of 30 ft and 170 ft respectively, from the point of projection.  Find the angle of projection and the highest point reached in the flight.
  8. A ball A impinges directly on an exactly equal and similar ball B lying on a smooth horizontal table. If ‘e’ is the coefficient of restitution, prove that after impact, the velocity of B is to that of A is (1+e): (1-e).

PART – C

Answer any TWO questions                                                                           (2 x 20 = 40 marks)

 

  1. a) A uniform plane lamina in the form of a rhombus, one of whose angles is 120o is supported by two forces of magnitudes P and Q applied at the centre in the directions of the diagonals so that one side is horizontal.  Show that is P>Q, then P2 = 3Q2.
  1. b) Three equal strings of no sensible weight are knotted together to form an equilateral ∆ ABC and a weight W is suspended from A. If the triangle and the weight be supported with BC horizontal, by means of two strings at B and C each at an angle 135o with BC, show that the tension in BC is .
  2. a) State and prove Varignon’s theorem on moments.
  3. b) A mass ‘m1’ hanging vertically pulls a mass ‘m2’ vertically up a rough inclined plane of inclination α by a light inextensible string passing over a smooth, light pulley at the top of the plane, the portion of the string between m2 and the pulley being parallel to the line of greatest slope. Find the acceleration of the system and the tension in the string.

 

  1. a) Two particles of masses m1 and m2 (m1 > m2) are connected by means of a light inextensible string passing over a light, smooth, fixed pulley. Discuss the motion.
  2. b) A particle of mass m is projected vertically under gravity, the resistance of air being ‘mk’ times the velocity. Show that the greatest height altained by the particle is where V is the terminal velocity of the particle and λV is its initial velocity.

 

  1. a) A particle is projected up an inclined plane of inclination b. Find the range on the inclined plane.
  2. b) If V1, and V2 be the velocities at the ends of a focal chord of a projectile’s path and u, the horizontal component of the velocity, show that .

 

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Loyola College B.Sc. Mathematics April 2009 Mathematical Statistics Question Paper PDF Download

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       LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

YB 15

FOURTH SEMESTER – April 2009

ST 4206/ ST 4201 – MATHEMATICAL STATISTICS

 

 

 

Date & Time: 27/04/2009 / 1:00 – 4:00  Dept. No.                                                        Max. : 100 Marks

 

 

                                                                        PART – A 

                                                     

ANSWER ALL THE QUESTIONS                                                                          (10 x 2 = 20)

 

  1. Define Mutually Exclusive Events with examples.
  2. State multiplication law of probability
  3. What is the chance that a leap year selected at random will contain 53 sundays?
  4. Define probability generating function of a random variable.
  5. If X is a random variable and a and b are constants, then show that

E (aX + b) = a E(X) + b provided all the expectations exist.

  1. Derive the moment generating function of Poisson distribution.
  2. Define Beta Distribution of First kind.
  3. Define Regression.
  4. Ten unbiased coins are tossed simultaneously. Find the probability of getting at least seven heads.
  5. Define Most Powerful test.

 

PART – B

ANSWER ANY FIVE QUESTIONS                                                                          (5 x 8 = 40)

  1. Four cards are drawn at random from a pack of 52 cards. Find the probability that
  2. These are a king, a queen, a jack and an ace.
  3. Two are kings and two are queens
  4. Two are black and two are red.
  5. There are two cards of hearts and two cards of diamonds.

 

  1. The contents of urns I, II and III are as follows:

Urn I   : 1 White, 2 Black and 3 Red balls

Urn II  : 2 White, 1 Black and 1 Red balls, and

Urn III : 4 White, 5 Black and 3 Red balls

One urn is chosen at random and two balls drawn from it. They happen to be white and              red. What is the probability that they come from Urns I, II or III?

  1. Let X be a Continuous random variable with probability density function

 

a). Determine the constant a

b). Compute P( X ≤ 1.5 )

 

  1. State and prove Chebyshev’s Inequality.

 

  1. Derive the Mean and Variance of Binomial Distribution.

 

  1. The joint probability distribution of two random variables X and Y is given by

P ( X = 0, Y = 1) =  , P ( X = 1, Y = -1) = and P ( X = 1, Y = 1) =. Find

  1. Marginal distributions of X and Y and
  2. Conditional probability distribution of X given Y = 1.

 

  1. The following figures show the distribution of digits in numbers chosen at random

from a telephone directory:

Digits 0 1 2 3 4 5 6 7 8 9 Total
Frequency 1026 1107 997 966 1075 933 1107 972 964 853 10,000

 

Test whether the digits may be taken to occur with equal frequency in the directory.

  1. Define
    1. Null Hypothesis
    2. Alternative Hypothesis
  • Level of Significance
  1. Two types of Errors                                                     ( 2 + 2 + 2 + 2 )

 

PART – C

ANSWER ANY TWO QUESTIONS                                                                        (20 x 2 = 40)

  1. (a). State and Prove Baye’s Theorem . (10)

 

(b). Three groups of Children contain respectively 3 girls and 1 boy, 2 girls and 2 boys,

and 1 girl and 3 boys. One child is selected at random from each group. Show that

the chance that the three selected consist of 1 girl and 2 boys is  .               (10)

 

  1. (a). In four tosses of a coin, let X be the number of heads. Tabulate the 16 possible

outcomes with the corresponding values of X. By simple counting, derive the

probability distribution of X and hence calculate the expected value of X        (10)

 

 

 

(b). A random variable X has the following probability density function:

 

x 0 1 2 3 4 5 6 7
p(x) 0 k 2k 2k 3k k2 2k2 7k2+k

 

  1. Find k
  2. Evaluate
  • If , find the minimum value of a.
  1. Determine the distribution function of X (10)

 

  1. (a). State any five properties of Normal Distribution (8)

 

(b). A manufacturer, who produces medicine bottles, finds that 0.1% of the bottles

are defective. The bottles are packed in boxes containing 500 bottles. A drug

manufacturer buys 100 boxes from the producer of bottles. Using Poisson

distribution, find how many boxes will contain :

  1. no defective and
  2. at least two defectives                                                                             (12)

 

  1. (a). If , find
    1. Var (X)
    2. Var (Y)
  • r (X,Y) (10)

(b). The mean weekly sales of soap bar in departmental stores was 146.3 bars per store.

After an advertising campaign the mean weekly sales in 22 stores for a typical week

increased to 153.7 and showed a standards deviation of 17.2. Was the advertising

campaign successful?                                                                                           (10)

 

 

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Loyola College B.Sc. Mathematics April 2009 Linear Algebra Question Paper PDF Download

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          LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 32

FIFTH SEMESTER – April 2009

MT 5508 / 5502 – LINEAR ALGEBRA

 

 

 

Date & Time: 06/05/2009 / 1:00 – 4:00            Dept. No.                                               Max. : 100 Marks

 

 

SECTION – A

      Answer ALL the questions.                                                                          (10 X 2 = 20)

  1. Let V be a vector space.  Prove that (– a)v = a(– v) = – (av) for any a Î F and vÎ V.
  2. Prove that any non-empty subset of linearly independent vectors is linearly independent.
  3. Show that the vectors (1, 0, -1), (2, 1, 3), (–1, 0, 0) and (1, 0, 2) are linearly dependent in R3.
  4. Verify that the map T : R2 ® R2 defined by T(x, y) = (2x + y, y) is a homomorphism.
  5. If V is an inner product space, then prove that
  6. Define eigenvalue and eigenvector of a linear transformation.
  7. If l Î F is an eigenvalue of T Î A(V), prove that l is a root of the minimal polynomial of T over F.
  8. For A, B Î Fn, prove that tr (A + B) = tr (A) + tr (B).
  9. If A and B are Hermitian, show that AB + BA is Hermitian.
  10. Prove that the eigenvalues of a unitary transformation of T are all of absolute value 1.

 

SECTION – B

Answer any FIVE questions only.                                                         (5 X 8 = 40)

  1. Prove that the union of two subspaces of a vector space V over F is a subspace of V if and only if one is contained in the other.
  2. If V is a vector space of finite dimension and is the direct sum of its subspaces U and W, then prove that dim V = dim U + dim W.
  3. Let U and V be vector spaces over a field F, and suppose that U has finite dimension n. Let {u1, u2, . . . un} be a basis of U and let v1, v2, . . . vn be arbitrary vectors in V. Prove that there exists a unique homomorphism T: U ® V such that T(u1) = v1, T(u2) = v2, . . . , T(un) = vn.
  4. Define an orthonormal set.  If {w1, w2, . . . wn} is an orthonormal set in an inner product space V, prove that .
  5. Prove that T Î A(V) is invertible if and only if the constant term of the minimal polynomial for T is not zero.

 

  1. Let V = R3 and suppose that  is the matrix of T Î A(V) relative to the standard basis v1 = (1, 0, 0), v2 = (0, 1, 0), v3 = (0, 0, 1).  Find the matrix of T relative to the basis w1 = (1, 1, 0), w2 = (1, 2, 0) and w3 = (1, 2, 1).
  2. Show that any square matrix can be expressed uniquely as the sum of a symmetric matrix and a skew-symmetric matrix.
  3. Investigate for what values of l, m, the system of equations  x1 + x2 + x3 = 6,
     x1 + 2x2 + 3x3 = 10,   x1 + 2x2 + l x3 = m  over a rational field has (a) no solution  (b) a unique solution  (c) an infinite number of solutions.

 

SECTION – C

Answer any Two questions.                                                                   (2 X 20 = 40)

  1. (a) Let T : U ® V be a homomorphism of two vector spaces over F and suppose that U has finite dimension. Then prove that

                              Dim U = nullity T + rank of T

(b)  If W1 and W2 are subspaces of a finite dimensional vector space V, prove that dim (W1 + W2) = dim W1 + dim W2 – dim (W1 Ç W2)

  1. (a) Prove that T Î A(V) is singular if and only if there exists an element v ¹ 0 in V such that T(v) = 0.

(b)  Prove that every finite-dimensional inner product space V has an orthonormal set as a basis.    (8+12)

  1. (a) If T be the linear transformation on R3 defined by
    T(a1, a2, a3) = ( a1 + a2 + a3, – a1 – a2 – 4a3, 2a1 – a3), find the matrix of T relative to the basis v1 = (1, 1, 1), v2 = (0, 1, 1), v3 = (1, 0, 1).

(b)  Prove that the vector space V over F is a direct sum of two of its subspaces W1 and W2 if and only if V = W1 + W2 and W1 Ç W2 = (0).                                                                    (8+12)

  1. (a) If T Î A(V), then prove that T* Î A(V).  Also prove that

(i) (S+T)* = S* + T*     (ii)  (ST)* = T*S*     (iii)       (iv)  (T*)* = T

(b)  Prove that the linear transformation T on V is unitary if and only if it takes an orthonormal basis of V onto an orthonormal basis of V.

 

 

 

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Loyola College B.Sc. Mathematics April 2009 Graphs, Diff. Equ., Matrices & Fourier Series Question Paper PDF Download

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      LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 02

FIRST SEMESTER – April 2009

MT 1501 – GRAPHS, DIFF. EQU., MATRICES & FOURIER SERIES

 

 

 

Date & Time: 22/04/2009 / 1:00 – 4:00    Dept. No.                                                       Max. : 100 Marks

 

 

SECTION – A

Answer ALL the questions.                                                                         (10 X 2 = 20)

  1. Write the range and domain of
  2. Check whether each of the following defines a function:

(i)  y = -3x + 8                              (ii) x2 + y2 = 1

  1. State the principle of least square.
  2. Reduce into linear form: y = a xn, where a and n are constants.
  3. Define  (i) general solution, (ii) particular solution of a difference equation.
  4. Solve 16 yx+2 – 8 yx+1 + yx = 0.
  5. Find the eigenvalues of A5 when.
  6. Find the sum and product of eigenvalues of the matrix.
  7. State the Dirichlet conditions for Fourier series.
  8. Find the Fourier constants a0 and an for the function f(x) = x3 in (-p < 0 < p).

 

SECTION – B

Answer any FIVE questions.                                                                 (5 X 8 = 40)

  1. (a)  A company sold 500 tool kits in 2000 and 20000 tool kits in 2005.  Assuming that sales are approximated by a linear function, express the company’s sales S as a function of linear time t.

(b)  A company has fixed cost of Rs. 8250 and a marginal cost of Rs. 450 for each item produced.  Express the cost C as a function of the number x of items produced and evaluate the function at x = 20 and at x = 50.

  1. Using the method of least square fit a straight line to the following data.

x:               0               1              2                3               4

y:               1             1.8           3.3            4.5             6.3

 

 

  1. The data in the following table will fit a formula of the type y = a + bx + cx2.  Find the formula by the method of group averages

x:           87.5         84.0          77.8            63.7          66.7            36.9

y:           292          283            270            235            197            181

  1. Solve:    yn+2 – 4 yn+1 + 4yn = 2n + 3n + p.
  2. Find the inverse of the matrix  using Cayley-Hamilton theorem.
  3. Find the eigenvalues and eigenvectors of the matrix .
  4. If  expand f(x) as a sine series in the interval (0, p)
  5. Express f(x) = | x |, -p < x < p as a Fourier series and hence deduce that

SECTION – C

Answer any TWO questions.                                                                 (2 X 20 = 40)

  1. (a) Given the following total revenue R(x) = 600x – 5x2 and total cost
    C(x) = 100 x + 10,500  (i) express p as a function of x, (ii) determine the maximum level of profit by finding the vertex of p(x) and (iii) find the x intercepts and draw a rough sketch of the graph.

(b)  The temperature q of a vessel of cooling water and the time t in minutes since the beginning of observation are connected by a relation of the form
q = a ebt + c.  Their tabulated values are given below

t:             0          1         2           3          5             7          10         15        20

q:         52.2     48.8     46.0      43.5      39.7        36.5      33.0     28.7    26.0

Find the best values you can for a, b, c.

  1. Solve the following equation.
  • Dux + D2ux = cos x
  • (E2 – 5E + 6) yn = 4n (n2 – n + 5)
  1. (a)  Expand f(x) = x (2p  – x) as a Fourier series in (0, 2p)

(b)  Obtain the Fourier series for the function f(x) = x2, –p £ x £ p and from it deduce that

  1. Page: 2

    Reduce the quadratic form  in to a canonical form by the method of orthogonal reduction.

 

 

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Loyola College B.Sc. Mathematics April 2009 Fin. Accounts & Fin. Stat. Analysis Question Paper PDF Download

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            LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc., B.A. DEGREE EXAMINATION – MATHEMATICS&HISTORY,ECONOMICS

KP 14

FOURTH SEMESTER – April 2009

CO 4205 / 4201 – FIN. ACCOUNTS & FIN. STAT. ANALYSIS

 

 

 

Date & Time: 27/04/2009 / 9:00 – 12:00  Dept. No.                                                Max. : 100 Marks

 

 

SECTION A

Answer all the questions:                                                                    (10  x 2 = 20 marks)

  1. List the various types of cash book?
  2. What is Bank Reconciliation Statement?
  3. Journalise the following:
  • Goods worth Rs.1,000 taken by the proprietor for personal use

(ii) Paid Advertisement expenses to Anil & Co.,   Rs.1,500

  1. Classify the following under Personal, Real, Nominal account
  • Outstanding salary (b)  Goodwill  (c ) Loss by fire  (d)  Purchases
  1. Fill in the blanks:
  • Purchases book is also known as ___________.
  • Journal is the book of _________ entry.
  1. Ascertain the amount of profit/loss on sale of machinery:

Cost of Machine  Rs. 1,00,000; Accumulated Depreciation on machinery Rs. 30,000 ;  Sale value of machinery Rs. 85,000

  1. Find out Earning per share from the following:

Net profit after tax Rs. 2,00,000

10% Preference Share capital Rs. 4,00,000

Equity share capital (Rs.10 each)  Rs. 1,00,000

  1. Calculate the amount of subscription to be credited to Income and expenditure account for the year 2008:

Subscriptions received during 2008                                        Rs.24,000

Subscriptions received in advance for 2009                           Rs.  1,600

Subscriptions outstanding in the beginning of  2008             Rs.  2,000

Subscriptions outstanding at the close of  2008                     Rs.  1,500

  1. What are the different modes of expressing ‘Ratios’?
  2. Give adjusting entry for the following:
  • Depreciation @10% on furniture of Rs. 5,000
  • Wages outstanding Rs. 200

SECTION B

Answer any five questions:                                                                 (5 x 8 = 40 marks)

  1. Who are the users of accounting information and why do the users need the accounting information?
  2. Explain any four accounting concepts.
  3. What is ‘Petty cash book’?  What are its advantages?
  4. Prepare a bank reconciliation statement from the following data as on 31-12-2008

Rs.

  • Balance as per cash book 25,000
  • Cheques issued but not presented for payment 18,000
  • Cheques deposited in bank but not collected 20,000
  • Bank paid insurance premium   8,000
  • Direct deposit by a customer   5,000
  • Interest on investment collected by bank 12,000
  • Bank charges   1,000
  1. Enter the following transactions in Rohan’s cash book with discount and cash column:

Date                           Particulars                                                Rs.

Jan  1               Cash balance                                                   18,500

3               Cash sales                                                        33,000

7               Paid David                                                      15,850

Discount allowed by him                                    150

13               Sold goods to Mohan on credit                      19,200

15               Cash withdrawn for personal expenses            2,400

16               Purchased goods form Charles on credit        14,300

22               Paid into bank                                                 22,750

25               Cash received from Mohan                             19,000

Allowed him discount                                                     200

 

  1. A Ltd., provides the following accounting data for the year ending 31st March 2008 and request you to ascertain (a) Gross profit ratio (b) Net profit ratio

(c) Operating ratio (c) Operating profit ratio

Rs.

Sales                                                                            20,00,000

Gross profit                                                                   8,00,000

Office expenses                                                               60,000

Selling expenses                                                               40,000

Finance expenses                                                             30,000

Loss on sale of plant                                                          4,000

Interest received on investments                                       5,000

Net profit                                                                      6,71,000

 

  1. Naresh Ltd., had a balance of Rs. 80,000 in its Profit & Loss appropriation account on 1st  April 2007. During 2007-2008, its profit before tax amounted to Rs. 7,62,500.  The income tax provision of the year amounted to be 347,500.  The company decided to transfer Rs. 60,000 to General Reserve, Rs,. 87,500 to sinking fund for redemption of debentures to pay a dividend for the financial year at the rate of 10%.   The company’s share capital consisted of 3,00,000 shares of Rs.10 each.  Draw up the Profit & Loss Appropriation Account.
  2. The following balances were extracted from the ledger of Ram on 31st March 2008.  You are required to prepare a trial balance as on that date in proper form:

Rs.                                                       Rs.

Drawings                                 6,000              Salaries                        9,500

Capital                                     24,000             Sales returns                1,000

Sundry creditors                     43,000             Purchase returns          1,100

Bills payable                              4,000             Travelling expenses     4,600

Loan from Karthik                  10,000             Commission paid           100

Furniture                                   4,500             Trading expenses        2,500

Opening  stock                        47,000             Discount earned          4,000

Cash in hand                                900             Rent                            2,000

Cash at bank                           12,500             Bank overdraft            6,000

Tax                                            3,500             Purchases               1,26,000

Sales                                     1,28,000

 

SECTION C

Answer any two questions:                                                                 (2 x 20 = 40 marks)

  1. The following Trial Balance is extracted from the books of Mr. Rahul on 31-12-2008

Particulars                                           Debit               Credit

Rs.                   Rs.

Furniture                                                                       640

Motor vehicles                                                            6,250

Buildings                                                                     7,500

Capital                                                                                                 12,500

Bad debts                                                                       125

Sundry Debtors and Creditors                                                3,800                 2,500

Stock on 1-1-08                                                          3,460

Purchases and Sales                                                    5,475               15,450

Bank overdraft                                                                                      3,050

Sales and Purchases returns                                          200                     125

Advertising                                                                   450

Interest                                                                                      118

Commission                                                                                             375

Cash                                                                              650

Taxes and insurance                                                    1,250

General expenses                                                           782

Salaries                                                                        3,300               ______

34,000               34,000

Adjustments:

Stock on 31-12-2008 was Rs. 3,250

Depreciate Buildings @ 5% Furniture @ 10% and Motor vehicle @ 20%

Salaries Rs. 300 amd taxes Rs. 120 are outstanding

Insurance prepaid for Rs. 100

Write off further Rs. 100 as bad debts

Prepare Trading and Profit and Loss account for the year ending 31-12-2008 and

a Balance Sheet as on that date.

 

20  The following is the Receipts and Payments A/c of Delhi football association for the first year ending 31st Dec 2008

Receipts & Payments Account

 

Receipts                              Rs.                Payments                             Rs.

To Donation                                  50,000       By Pavilions office              40,000

To Reserve Fund (Life

Membership and entrance fees)    4,000       By expenses in connection

To Receipts from  football                              with matches                            900

Matches                                      8,000       By furniture                           2,100

Revenue Receipts:                                           By Investments at cost         16,000

To Subscriptions                             5,200       Revenue Payments:

To  locker Rents                                   50       By Salaries                             1,800

To interest on securities                     240       By Wages                                 600

To sundries                                         350       By Insurance                             350

By Telephone                            250

By Electricity                            110

By Sundry expenses                 210

                  By Balance on hand               5,520

67,840                                                    67,840

Additional information:

  • Subscriptions outstanding for 2008 are Rs. 250
  • Salaries unpaid for 2008 are Rs. 170
  • Wages unpaid for 2008 are Rs. 90
  • Outstanding bill the sundry expenses is Rs. 40
  • Donations received have to be capitalized.

Prepare from the details given above and Income and Expenditure A/c for the year ended 31-12-2008 and the Balance Sheet of the Association as on that date.

 

21.Following are the summarized Balance Sheets of Arul Ltd as on 31st Dec 2007 and 2008

Balance Sheets

Liabilities    2007

Rs.

     2008

Rs.

 Assets     2007

Rs.

     2008

Rs.
Share capital

General reserve

P&L A/c

Bank Loan

Sundry creditors

Provision for taxation

 1,00,000

 

50,000

30,500

70,000

 

50,000

 

32,000

 

 1,50,000

 

60,000

30,000

–

 

37,200

 

35,000

 Land & Building

Plant & Machinery

Stock

Debtors

Cash

Bank

Goodwill

  

1,00,000

 

1,00,000

50,000

75,000

500

2,000

5,000

  

90,000

 

1,19,000

24,000

63,200

1,000

15,000
3,32,500 3,12,200 3,32,500 3,12,200

 

Additional information:

During the year ended 31st December 2008

  • Dividend of Rs. 23,000 was paid
  • Depreciation written off on building Rs. 10,000, Machinery Rs. 14,000
  • Income tax paid during the year Rs. 28,000

Prepare a statement of cash flow for the year ended 31 Dec 2008.

 

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Loyola College B.Sc. Mathematics April 2009 Data Structure & Algorithm Question Paper PDF Download

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     LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

ZA 35

SIXTH SEMESTER – April 2009

MT 6602 – DATA STRUCTURE & ALGORITHM

 

 

 

Date & Time: 23/04/2009 / 9:00 – 12:00     Dept. No.                                                       Max. : 100 Marks

 

 

PART – A ( 10 ´ 2 = 20)

Answer ALL questions

  1. Define atomic data.
  2. What is pseudocode?
  3. What is sequential search?
  4. List any two variations of sequential search.
  5. Explain (i) random list (ii) ordered list.
  6. What is parsing?
  7. Define Fibonacci series recursively.
  8. Define complete binary tree
  9. What is sort efficiency?
  10. Explain selection sort.

 

PART – B ( 5 ´ 8 = 40)

Answer any FIVE questions

  1. Write a short note on (i) ADT operators and (ii) ADT structure.
  2. Write the algorithm for probability search.
  3. Explain the four operations associated with linear list.
  4. Write an algorithm to convert a decimal number to a binary number.
  5. Explain the queue operations (i) Enqueue (ii) Dequeue (iii) Queue Front and
    (iv) Queue Rear.
  6. Write a program to find factorial of a given number recursively.
  7. What is heap sort? Write its algorithm.
  8. Explain the straight insertion sort with example.

 

PART – C (2 ´ 20 = 40)

Answer any TWO questions

  1. What is binary search? Write its algorithm.
  2. What is backtracking? Explain eight queens problem and write its algorithm.
  3. How do you implement queues in arrays? Write the complete algorithm.
  4. Write the algorithms of Babble sort and Quick sort and also discuss their efficiency.

 

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Loyola College B.Sc. Mathematics April 2009 Complex Analysis Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

ZA 36

B.Sc. DEGREE EXAMINATION – MATHEMATICS

SIXTH SEMESTER – April 2009

MT 6603/MT 6600 – COMPLEX ANALYSIS

 

 

 

Date & Time: 18/04/2009 / 9:00 – 12:00        Dept. No.                                                          Max. : 100 Marks

 

 

PART – A

Answer ALL questions:                                                                               (10 x 2 = 20)  

  1. Find the absolute value of .
  2. Show that does not have a limit as .
  3. When do you say that a sequence of function converges uniformly?
  4. Using Cauchy integral formula evaluate where C is the circle .
  5. Find zeros of the function .
  6. When do you say that a point “a” is an isolated singularity of ?
  7. Calculate the residue of .
  8. State Cauchy’s residue theorem.
  9. Define a bilinear transformation.
  10. When do you say that a function is conformal at ?

PART – B

Answer any FIVE questions:                                                                                   (5 x 8 = 40)

  1. Illustrate by an example that C.R. equations are not sufficient for differentiability at a point.
  2. State Liouville’s theorem and deduce the Fundamental theorem of algebra from it.
  3. Let be analylic in a region D bounded by two concentric circles and on the boundary. Let be any point in D. Show that

.

  1. State and prove Maximum modules theorem.
  2. Expand as a power series in the region .
  3. Evaluate where C is the square having vertices

.

 

 

  1. Using contour integration evaluate .
  2. Find the image of the circle under the map .

PART – C

Answer any TWO questions:                                                                       (2 x 20 = 40)

 

  1. (a) Let nbe a function defined on the region D such that u and v and

their first order partial derivatives are continuous in D. If the first order partial derivatives of u and v satisfy the C.R. equations at , show that  is differentiable at

(b) Let be a given power series. Show that there exists a number R such that

such that

(i)  the series converges absolutely for every z with

(ii) if , the convergence uniform in .

(iii) if , the series diverges.                                                                        (10+10)

  1. (a) State and prove Taylor’s theorem.

(b) Expand using Taylors series about the point .                                       (15+4)

  1. (a) State and prove Argument theorem.

(b) State and prove Rouche’s theorem.

(c) Prove that .                                                                                      (7+6+7)

  1. (a) Show that the transformation maps the circle into a straight

line given by .

(b) Find the bilinear transformation which maps the points respectively to

.

(c) Show that a bilinear transformation where maps the real axis into

itself if and only if a, b, c, d are real.                                                                          (6+6+8)

 

 

 

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Loyola College B.Sc. Mathematics April 2009 Astronomy Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.Sc. DEGREE EXAMINATION – MATHEMATICS

THIRD SEMESTER – NOVEMBER 2010

MT 3502/MT 5503 – ASTRONOMY

 

 

 

Date : 02-11-10                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART – A

 

Answer ALL Questions                                                                                          (10 x 2 = 20 marks)

 

 

  1. Define diurnal motion of a star.
  2. Define ecliptic.
  3. Define Equinoxial points.
  4. What is the effect of refraction on the position of a celestial body?
  5. Define geocentric parallax.
  6. State Kepler’s laws of planetary motion.
  7. Define age of the moon.
  8. Define annular eclipse.
  9. What are inner planners?
  10. Write a note on Asteroids.

PART – B

Answer any FIVE Questions                                                                                       (5 x 8 = 40 marks)

 

 

  1. Define sidereal time and prove that its is equal to R.A ± hour angle of a star.
  2. Define circumpolar star and find the condition for any star to be circumpolar.
  3. Trace the changes in the length of the day for a place on earth’s equator.
  4. Compare refraction and geocentric parallax.
  5. Find the effect of refraction on R.A and declination of a star.
  6. Define sidereal month and synodic month for the moon and find the relation between them.
  7. Compare solar and lunar eclipses.
  8. Write a note on comets.

PART – C

Answer any TWO Questions                                                                                        (2 x 20 = 40 marks)

 

 

  1. a) Explain the equatorial system to fix a celestial body. Bring out the merits and demerits.           (10)

 

 

  1. b) Define twilight and find the condition for twilight to last the whole night. (10)

 

  1. a) Derive Newton’s deductions from kepler’s laws.                                                                (12)
  2. b) Define equation of time and prove that it vanishes four times a year. (8)
  3. a) Derive tangent formula for refraction.
  4. b) Explain different calendars.
  5. a) Trace the changes in the elongation and phases of the moon in one lunation.
  6. b) Find the maximum number of eclipses in a year.

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Loyola College B.Sc. Mathematics April 2009 Algebra, Calculus & Vector Analysis Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE Examination – Mathematics

Third Semester – OCT/NOV 2010

MT 3501/MT 3500 – Algebra, Calculus and Vector Analysis

 

 

Date & Time:                                Dept. No.                                                    Max. : 100 Marks

 

 

PART – A

Answer ALL questions.                                                                                                  (10 ´ 2 = 20)

  1. Evaluate
  2. Find the Jacobian of the transformation x = u (1 + v) ; y = v (1 + u).
  3. Find the complete solution of z = xp + yq + p2 – q2.
  4. Solve
  5. For , find div at (1, -1, 1)
  6. State Green’s theorem.
  7. What is L(f¢¢ (t))?
  8. Compute
  9. Find the sum and number of all the divisors of 360.
  10. Define Euler’s function f(n) for a positive integer n.

 

PART – B

Answer any FIVE questions                                                                                          (5 ´ 8 = 40)

  1. Evaluate by changing the order of the integration.
  2. Express in terms Gamma functions.
  3. Solve z2( p2+q2 + 1 ) = b2
  4. Solve p2 + q2 = z2(x + y).
  5. Find
  6. Find
  7. Prove that
  8. Show that 18! + 1 is divisible by 437

 

PART – C

Answer any THREE questions.                                                                               (2 ´ 20 =40)

  1. (a) Evaluate  taken through the positive octant of the sphere x2 + y2 + z2 = a2.

(b)  Show that

  1. (a) Solve (p2 + q2) y = qz.

(b)  Solve (x2 – y2)p + (y2 – zx)q = z2 – xy

  1. (a) Verify Gauss divergence theorem for taken over the region bounded by the planes x = 0, x = a, y = 0 y = a, z = 0 and z = a.

(b)  State and prove Fermat’s theorem.

  1. (a) Using Laplace transform solve  given that .

(b)  Show that if n is a prime and r < n, then (n – r)!  (r – 1)! + (-1)r – 1 º 0 mod n.

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