B.Sc Physics Question Paper

Loyola College B.Sc. Physics April 2003 Mathematics For Physics Question Paper PDF Download

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LOYOLA COLLEGE (Autonomous), chennai – 600 034

B.Sc.  degree examination – physics

third semester -april 2003

 Mt  3100/ MAT 100 mathematics for physics

28.04.2003                                                                                     Max.: 100 Marks

9.00 – 12.00

 

PART – A                                       (10 ´ 2 = 20 Marks)

  1. Define Laplace transform of f(t) and prove that L(e–at) = .
  2. Find .
  3. Prove that the mean of the Poisson distribution Pr =, r = 0, 1, 2, 3 ….. is equal to m.
  4. Mention any two significance of the normal distribution.
  5. Find the .
  6. Find L (1+ t)2 .
  7. Find L-1.
  8. Write down the real part of sin .
  9. Prove that in the R.H. xy = c2, the subnormal varies as the cube of the ordinate.
  10. If y = log (ax +b), find y

 

PART – B                                          (5 ´ 8 = 40 Marks)

Answer any FIVE questions.  Each question carries EIGHT marks

  1. (a) Find L-1

           

  • Find L .
  1. Find L  .
  2. Define orthoganal matrix and prove that the matrix is orthoganal.
  3. Verify cayley-Hamilton theorem and hence find the inverse of
  4. (i)  Prove that
  • Find the sum to infinity of series

 

 

 

 

 

  1. (i) Find q approximately to the nearest minute if cos q =

(ii)   Determine a, b, c such that     .

 

  1. If cos (x + iy) = cos q + i sinq,  Show that cos 2x + cosh 2y =2.

 

  1. What is the rank of .

 

PART – C                                      (2 ´ 20 = 40 Marks)

Answer any TWO questions. Each question carries twenty marks.

 

  1. (a) If y = .

 

  • Find the angle of intersection of the cardioids r = a(1+cosq) and r = b(1-cosq).
  1. (a) Certain mass -produced articles of which 0.5 percent are defective, are packed

in  cartons each containing 130 article.  What Proportion of cartons are free

from defective articles, and what proportion contain 2 or more defectives

(given e-2.2 = 0.6065)

 

  • Of a large group of men 5 percent are under 60 inches in height and 40 percent are between 60 and 65 inches. Assuming a normal distribution find the mean height and standard deviation.

 

  1. (a) Find the sum to infinity of the series

 

  • From a solid sphere, matter is scooped out so as to form a conical cup, with vertex of the cup on the surface of the sphere, Find when the volume of the cup is maximum.

 

  1. a) Prove that sin5q =
  2. b) Prove that sin4q cos2q =

 

 

 

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Loyola College B.Sc. Physics Nov 2003 Physics For Chemistry Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FOURTH SEMESTER – NOVEMBER 2003

PH 4201 / PHY 201 PHYSICS FOR CHEMISTRY

 

08.11.2003                                                                                                                                     100 Marks

1.00 – 4.00

 

SECTION – A

 

Answer ALL questions                                                                                          (2 x 10 = 20 marks)

 

  1. What is a polarimeter?
  2. What is diffraction?
  3. Give expressions for the combined capactiance of three capacitors connected in (I) series (ii) parallel.
  4. State Lenz’s law.
  5. Define half-life period of a radioactivity substance
  6. State Pauli’s exclusion principle.
  7. List any four characteristics of an operational amplifier.
  8. Sketch an half-adder.
  9. What is Crystal lattice?
  10. Define packing factor.

 

SECTION – B

 

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

 

  1. Discuss in detail polarisation by reflection.
  2. Derive an expression for the energy stored by a charged capacitor.
  3. Explain the binding energy of a nucleus and derive an expression for the same.
  4. With a need sketch derive an expression for the gain of an inverting amplifier using an operational amplifiers.
  5. Tabulate the main characteristics of the seven crystal systems.

 

SECTION – C

 

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

 

  1. Explain how a plane transmission grating can be used to determine the wave length of a spectral line.
  2. Explain with necessary theory how a Carey-Foster bridge may be used to compare two nearly equal resistances.
  3. State Bohr’s postulates of hydrogen atom model. Obtain expressions for the radius and energy of the nth
  4. Realise operational amplifier as
  • adder (b) differentiator (c) integrator
  1. How are lattice parameter of a crystal found using Bragg’s x-ray spectrometer?

 

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Loyola College B.Sc. Physics Nov 2003 Materials Science Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – NOVEMBER 2003

PH 5402 / PHY 402 – MATERIALS SCIENCE

 

12.11.2003                                                                                           Max.   : 100 Marks

1.00 – 4.00

 

PART – A

 

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

 

  1. How will you classify the engineering materials on the basis of the major areas of applications?
  2. Write a note on the structure-property relationships in materials.
  3. Discuss the steps involved in the formation of Burger’s circuit for dislocation.
  4. Determine the Miller indices of a plane that makes intercepts of 4x, y and 2z.
  5. Give the formula for measuring the Young’s modulus of composite materials.
  6. Explain the phenomenon of “work hardening” of engineering materials.
  7. What is the principle of the NDT method based on photoelastic phenomenon.
  8. How does the intrinsic break down of a dielectric material take place?
  9. Calculate the relative dielectric constant of a barium titanate crystal, which, when inserted in

a parallel plate condenser of area 8 mm X 8 mm and distance of separation of 1. 8 mm gives a capacitance of 0.05 mF

 

  1. List the advantages of scanning electron microscopie (SEM).

 

PART – B

 

Answer any FOUR questions                                                                              (4 x 7.5 = 30)

 

  1. Discuss, how the physical properties of materials are influenced by the variation in bonding character.
  2. What is meant by a symmetry operation? Explain the different types of symmetry elements of a crystalline solid.
  3. What are true stress and true strain? Using the tensile stress-strain curve for a ductile material, obtain the power relationship connecting s and e.
  4. Explain (I) electrical resistance (ii) tribolectric effect and (iii) thermoelectric effect techniques adopted for NDT.
  5. Give the theory of ferroelectrics as applied to Barium Titanate. Mention the applications of ferroelectric materials.

 

 

-2-

PART – C

 

Answer any FOUR questions                                                                           (4 x 12.5 = 50)

 

  1. What is meant by polarization?

Discuss the various polarization processes with necessary diagrams and hence obtain the expression for the total polarization of a material.

 

  1. Draw a schematic diagram of an Electron Microscope and explain its working.

 

  1. a) Discuss the essential characteristics of covalent bonding with relevant examples.

(5 marks)

  1. Explain the necessary steps involved in the formation of ionic bond and obtain the expression for the potential energy of the system of bond forming atoms.       (7.5 marks)

 

  1. a) State and explain Bragg’s low of x-ray diffraction                                      (5 marks)

 

  1. Describe with a neat sketch, the powder XRD method of determining crystal structure.

 

  1. Discuss the atomic model of elastic behavior with necessary figure and derive the relations connecting y,

 

 

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Loyola College B.Sc. Physics Nov 2003 Geo Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

V SEMESTER – NOVEMBER 2003

PH 5400 / PHY 400 – GEO PHYSICS

 

07. 11. 03                                                                                                 Max.  : 100 Marks

1.00 – 4.00.

 

PART–A

 

Answer All questions                                                                               (10 x 2 = 20 marks)

 

  1. What is a P – wave? What is it’s velocity?
  2. State the generalised form of Snell’s law, with a ray diagram.
  3. Distinguish between surface waves and body waves with respect to their intensity variation with distances

 

  1. What are the quantities that can be measured using a Seismometer?
  2. Bring out the difference between focus and epicentre of an earth-
  3. Write down the Laplace’s and the Poisson’s equation obeyed by the gravitational potential.

 

  1. What is the cause of the main (magnetic) field of the earth according to the dynamo theory?

 

  1. Explain briefly, the Gauss method of determining the earth’s magnetic field
  2. Give the decay schemes of the radio nuclide K40.
  3. List the two possible sources of heat within the Earth.

 

PART–B

 

Answer any FOUR questions                                                               (4 x 7 ½ = 30 marks)

 

  1. Calculate the bulk modulus and the shear modulus of a material having the following properties.

Density  =  4000 kg / m3;  dilatational  velocity (a) = 10 km / s and        shear velocity (b) = 6 km / s.

 

  1. Outline the principle and the construction of the strain seismograph with a simple
  2. a) State the relation between the energy released and the magnitude of an earth-quake
  3. b) Compare the energies released in earth quakes of magnitudes M = 6 and M = 2.

-2-

 

  1. Explain the dynamo theory of earth’s magnetism with the help of the Faraday disc generator.

 

  1. Obtain an expression for the variation of temperature with depth below the surface of the earth.
PART–C

 

 

Answer any FOUR questions                                                             (4 x 12 ½ = 50 marks)

 

  1. a) Find an expression for the time of travel of a seismic wave due to refraction in the

outer layers of earth                                                                                   (6 ½ mark)

 

  1. b) Derive an expression for the gradient of density in terms of velocities of body

waves                                                                                                             (6 mark)

 

  1. Discuss the theory of a horizontal seismograph with a neat diagram and explain all

possible cases.

  1. Explain the working of (I) Hammond and Faller method (of measuring gravity) and
  2. ii) Worden gravimeter, with neat diagrams                                  (6 + 6 ½)

 

  1. Explain the theory of (I) Saturation magnetometer and (ii) alkali vapor

magnetometer.                                                                                                   (5 + 7 ½)

  1. Give the theory of radioactive dating of rocks and minerals using (i) the decay

scheme of Rb87 and (ii) the decay scheme of K40 .

 

 

 

 

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Loyola College B.Sc. Physics Nov 2003 Atomic & Nuclear Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

V SEMESTER – NOVEMBER 2003

PH 5500 / PHY 507 — atomic & nuclear physics

 

03-11-2003                                                                                                                                             100 Marks

1.00 – 4.00

 

PART – A

Answer All questions                                                                         (10 x 2 = 20 marks)

 

  1. State and explain Pauli’s exclusion Principle.
  2. What is normal Zeeman effect?
  3. An x-ray machine Produces 0.1Å x – rays. What accelerating voltage does it employ?
  4. What is Auger effect?
  5. Determine the ratio of the radii of the nuclei 13Al27 and 52Te125
  6. State Geiger-Nuttall Law.
  7. Mention the properties of the nuclear force.
  8. Explain latitude effects in Cosmic rays.
  9. What are slow neutrons and fast neutrons?
  10. Distinguish between Fluorescence and Phosphorescence.

 

PART – B

 

Answer any FOUR only                                                                (4 x 7 ½  = 30 marks)

 

  1. Explain Frank and Hertz method of determining critical potentials.

 

  1. a) Explain the origin of characteristic x-rays.            (3 ½  mark)

 

  1. b) A ray of ultraviolet light of wavelength 3000 Å falling on the surface of a material

whose work function is 2.28 eV ejects an electron.

What will be the velocity of the emitted electron?                             (4 mark)

 

  1. a) Show that the energy equivalent of 1 a m u is 931 MeV           (2 mark)

 

  1. What is meant by binding energy of the nucleus. Find the binding energy and binding energy per nucleon of  of mass 30.973763 amu

MH = 1.007825 amu and MN = 1.008665 amu.                            (5 ½ mark)

 

  1. What are elementary particles? How are they classified on the basis of their masses and interactions?

 

  1. a) Distinguish between nuclear fission and fusion           (2 mark)

 

  1. b) Explain with a neat diagram, the Bohr’s theory of Compound nucleus.

(5 ½ mark)

 

-2-

 

PART – C

 

Answer any FOUR only                                                               (4 x 12 ½ = 50 marks)

 

 

 

  1. a) Describe Thomson’s parobola method to measure the specific charge of positive ions.                                                      (8 ½ marks)

 

  1. In a Bainbridge mass spectrograph, singly ionised atoms of Ne20 pass into the deflection chamber with a velocity of 105 m/s. If  they are deflected by a magnetic field of flux density 0.08T, calculate the radius of their path and where Ne22 ions would fall if they had the same initial velocity.            (4 mark)

 

  1. a) Explain compton scattering and derive an expression for the wavelength of the Scattered beam                                                                            (8 ½ mark)
  2. b) Estimate the value of compton wavelengths when the scattered angles are (i) and (ii)                                                                                                   (4 mark)

 

  1. Give the origin of b – ray line and continuous spectrum. Outline the theory of b – disintegration.

 

  1. Describe the ‘liquid drop model’ of the nucleus. How can the semi – empirical mass formula can be derived from it? Mention the uses of this model.

 

  1. a) Derive the four factor formula for a thermal nuclear reactor.            ( 8 ½ mark)

 

  1. b) Calculate the power output of a nuclear reactor which consumes 10 kg of U – 235 per day, given that the average energy released per fission is 200 MeV.

(4 mark)

 

 

 

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Loyola College B.Sc. Physics April 2004 Properties Of Matter And Thermal Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI –600 034

B.Sc., DEGREE EXAMINATION – PHYSICS

FIRST SEMESTER – NOVEMBER 2004

PH 1500/PHY 500 – PROPERTIES OF MATTER AND THERMAL PHYSICS

 

01.11.2004                                                                                                           Max:100 marks

1.00 – 4.00 p.m.

 

SECTION – A

 

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

 

  1. Two spheres of masses 10 kg and 20 kg are 500 cm apart. Calculate the force of attraction between the masses.
  2. State Hooke’s Law. Give the dimensional formula of modulus of elasticity?
  3. Define the coefficient of viscosity of a liquid. What is the effect of temperature upon it?
  4. Calculate the excess of pressure inside a soap bubble of radius 3 x 10-3 Surface tension of soap solution is 20 x 10-3 N/m.
  5. Calculate the mean free path of a gas molecule given that the molecular diameter is

2 x 10-10 m and the number of molecules per cubic metre is 3 x 1025.

  1. What are intensive and extensive variables?
  2. What is Clausius statement of the second law of Thermodynamics?
  3. State the conditions required for a reversible process in thermodynamics.
  4. What is meant by an equation of State?
  5. What is a second order phase transition?

 

SECTION – B

 

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

 

  1. a) Derive an expression for the variation of acceleration due to gravity with latitude.   (5)

 

  1. b) How many times faster than the present speed would the earth have to rotate about its

axis, in order that the apparent weights of bodies at the equator be zero.                 (2.5)

 

  1. a) Derive an expression for the moment of the couple required to twist one end of a

cylinder when the other end is fixed.                                                                           (5)

 

  1. b) Calculate the elastic energy stored up in a wire originally 5 m long and 10-3 m in

diameter which has been stretched by 3 x 10-4 m due to a load of 10 kg.                (2.5)

 

  1. Derive a general expression for the excess of pressure across a curved liquid surface.

 

  1. Given the equation of state F (p, v, T) = 0, obtain the thermodynamic relation and hence obtain the coefficient of cubical expansion b for a Van der wall gas.
  2. Deduce Maxwell’s four thermodynamic relations.

SECTION – C

 

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

 

  1. a) Define the three moduli of elasticity and derive the relationship between them. (9)

 

  1. b) A rectangular bar, 2 cm in breadth, 1 cm in thickness and 1 m in length is supported at

its middle.  Calculate the depression of the young’s modulus of the material of the bar

is 2 x 1011 N/m2.                                                                                                         (3.5)

 

  1. a) Derive Poiseuille’s formula for the rate of flow of liquid through a capillary tube. (8.5)

 

  1. b) A capillary tube 10-3 m in diameter and 0.2 m in length is fitted horizontally to a vessel

kept full of alcohol of density 0.8 x 103 kg/m3.  The depth of the centre of the capillary

tube below the surface of alcohol is 0.3 m.  Viscosity of alcohol is 0.0012 N.S/m2.

Calculate the volume of alcohol that flows in 5 minutes.                                            (4)

 

  1. a) Obtain Clausius inequality relation.           (8.5)

 

  1. b) One kilogram of water at 7oC is mixed with 3 kilogram of water at a temperature of

47oC in a thermally insulated versel.  Find the change in entropy of the Universe

(Given Cp of water is 4180 J/kg/k).                                                                             (4)

 

  1. Explain Joule – Kelvin experiment and inversion curve and obtain an expression for

Joule – Kelvin coefficient.

 

  1. a) Derive an expression for the coefficient of viscosity of a gas on the basis of kinetic

theory of gases.                                                                                                            (8)

 

  1. b) How does the coefficient of viscosity of gas depend upon temperature and pressure? (2)

 

  1. c) The density of nitrogen at atmospheric pressure is 1.25 kg/m3. Find the R.M.S.

velocity of nitrogen molecule.                                                                                     (2.5)

 

 

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Loyola College B.Sc. Physics April 2004 Electronics II Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – NOVEMBER 2004

PH 5401 / PHY 401 – ELECTRONICS II

 

DATE             : 01.11.04                                                                              Max. : 100 Marks

TIME :1.00 – 4.00                                                             Time : 3 Hrs

 

 

PART A

 

Answer all questions                                                  (10 X 2 = 20)

 

 

  1. Calculate the voltage gain of a non-inverting amplifier with feedback resistance of 20 kW and input resistance of 1 kW.
  2. State any four properties of an ideal op-amp.
  3. Define the terms i) Resolution ii) linearity of A/D converter.
  4. Find the analog output voltage of a 3 bit D/A converter for all possible inputs with K = 1.
  5. Distinguish between discrete and integrated components.
  6. Define various scales of integration of integrated circuit.
  7. What is an instruction cycle?
  8. What is machine cycle?
  9. Tabulate the role of status lines of INTEL 8085.
  10. Write an assembly language program to add two 8 bit numbers.

 

PART B

 

Answer any four                                                                 (4 X 7.5 = 30)

 

  1. Set up a circuit to solve the simultaneous equations x + 2 y = 3; 2x + 3y = 5.
  2. Explain the functioning of successive approximation A/D converter.
  3. Write note on monolithic and thin film process used in the fabrication of IC’s
  4. Discuss the functioning of the following         i)IO/M          ii) INTR         iii)INTA iv)HOLD           v)HLDA                            vi) READY      vii) RD
  5. Classify 8085 instruction in various groups. Give an example of each.

 

 

PART C

 

Answer any four                                                                 (4 X 12.5 = 50)

 

  1. Explain the functioning of i) logarithmic amplifier and ii) Integrator.
  2. With a neat circuit diagram, explain the working of an op-amp based binary weighted D/A Converter.
  3. Explain with a neat diagram how i) a resistor ii) a transistor and     iii) a diode is fabricated in an integrating circuit.
  4. Draw the block diagram of INTEL 8085 and explain the same in detail.
  5. Discuss the various types of addressing modes of INTEL 8085 with suitable examples.

 

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Loyola College B.Sc. Physics April 2004 Atomic & Nuclear Physics Question Paper PDF Download

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             LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – APRIL 2006

                                                PH 5500 – ATOMIC & NUCLEAR PHYSICS

(Also equivalent to PHY 507)

 

 

Date & Time : 20-04-2006/AFTERNOON   Dept. No.                                                       Max. : 100 Marks

 

 

PART – A

 

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

  1. State Pauli’s exclusion principle.
  2. Distinguish between excitation and ionization potential of an atom.
  3. A photon recoils back after striking an electron at rest. What is the change in the wavelength of the photon?
  4. Find the minimum wavelength of x – rays produced by an x – ray tube operating at 1000 kV.
  5. Define range and stopping power of a – particles.
  6. Calculate the energy equivalent of 1 atomic mass unit.
  7. Distinguish between nuclear fission and fusion.
  8. What are magic numbers?
  9. What is pair production?
  10. What are the fundamental interactions in nature?

PART – B

Answer any FOUR questions                                                         (4 ´ 7.5 = 30 marks)

  1. What is Zeeman effect? Derive an expression for Zeeman shift.
  2. a) Explain the origin of characteristic x – rays.           (4.5)
  3. b) State Mosely’s law? What is its importance?       (3)
  4. a) What are isobars and isotones? Give one example for each (4)
  5. b) Calculate the binding energy and binding energy per nucleon of Ca40

Given,              mass of 1 proton = 1.007825 amu.

mass of 1 neutron = 1.008665 amu

mass of  = 39.96259 amu                                                         (3.5)

  1. How was the neutron discovered? Give an account of its production and detection.
  2. Discuss Yukawa’s meson field theory.


PART – C

Answer any FOUR questions                                              (4 ´ 12.5 = 50 marks)

  1. a) Describe Thomson’s parabola method to measure the specific charge of positive ions.                                                                                  (8.5)
  2. b) In a Bainbridge mass spectrograph, singly ionized atoms of Ne20 pass into the     deflection chamber with a velocity of 105 m/s. If they are deflected by a magnetic field of flux density 0.08T, Calculate the radius of their path and where Ne22 ions would fall if they had the same initial velocity.                     (4)
  3. a) Explain millikan’s experimental verification of Einstein’s photoelectric equation.
  4. b)   The wavelength of photoelectric threshold of Tungsten is 2300 .  Determine the kinetic energy of electrons ejected from the surface by ultraviolet light of wavelength 1800 .
  5. Give the origin of b – ray line and continuous Spectrum. Outline the theory of b – disintegration.
  6. a) Derive the four factor formula for the thermal nuclear reactor. (8.5)
  7. b) A reactor is developing energy at the rate of 3000 kW.  How many atoms of U235 undergo fission per/second?  How many kilograms of U235 would be used in 1000 hours of operation assuming that on an average an energy of 200 in eV is released per fission?                                                                                  (4)
  8. Describe the ‘liquid drop model’ of the nucleus. How can the semi-emirical mass formula be derived from it?  Mention the use of this model.

 

 

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Loyola College B.Sc. Physics Nov 2006 Prop.Of Mat.& Thermal Physics Question Paper PDF Download

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                   LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

AC 01

FIRST SEMESTER – NOV 2006

PH 1500 – PROP.OF MAT.& THERMAL PHYSICS

(Also equivalent to PHY 500)

 

 

Date & Time : 01-11-2006/1.00-4.00          Dept. No.                                                       Max. : 100 Marks

 

 

PART-A

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

 

  1. Two spheres of masses 10 kg and 20 kg are 500 cm apart. Calculate the force of attraction between the masses.
  2. What is geometrical moment of inertia in bending of beams?
  3. Give the SI unit and dimensions of coefficient of viscosity.
  4. What is critical velocity of a liquid?
  5. Water wets glass surface, while mercury does not. Why?
  6. Calculate the mean free path of a gas molecule of diameter 3.2 Å. The number of molecules per unit volume is 21.5x 1023 m-3.
  7. What is an intensive variable? Give two examples.
  8. Give the Classius statement of the second law of thermodynamics.
  9. State the law of equipartition of energy.
  10. What is perpetual motion machine of the second kind?

 

PART-B

Answer any FOUR questions                                                 (4×7.5=30 marks )

 

  1. Derive an expression for the variation of acceleration due to gravity with latitude.
  2. a) Derive an expression for the bending moment of a bar.                             (4)
  1. b) Find the energy stored in a wire 5 metre long and 10-3 metre in diameter when it is stretched through 3×10-3 metre by a load. Young’s modulus of the   material is 2×1011  N/m2 .                                                                         (3.5)
  2. a) Obtain Mayer’s formula for the flow of a gas through a capillary tube. (5.5)
  3. b) State any two properties of a good lubricant. (2)
  4. a) Derive Classius- Clapeyron equation for liquid-vapour equilibrium. (5)
  5. b) One kilogram of water at 373K is mixed with 1 kilogram of water at 273K. Estimate the change in entropy. (2.5)
  6. Derive Maxwell’s thermodynamical relations.

 

 

PART-C

Answer any FOUR questions                                                 (4×12.5=50 marks)

  1. a) Derive the relationship between the three elastic moduli and deduce an expression for Poisson’s ratio.                                                                        (7.5)
  2. b) Calculate the Poisson’s ratio for the material whose

Young’s modulus = 12.25X1010 N/m2 and

Rigidity modulus = 4.55 X 1010 N/m2.                                                      (5)

  1. a) Describe with relevant theory the Quincke’s method for the determination of surface tension and angle of contact of mercury. (10)
  2. b) What would be the pressure inside a small air bubble of 10-4 m radius, situated just below the surface of water? Surface tension of water is 70×10-3 N/m and the atmospheric pressure = 1.012×105 N/m2.                                     (2.5)
  3. a) Explain the transport Phenomena. Derive an expression for the coefficient of viscosity of a gas on the basis of the kinetic theory of gases. (10)
  4. b) How does the coefficient of viscosity of gas depend upon temperature and pressure ?                                                                         (2.5)
  5. a) Obtain the Classius inequality relation of thermodynamics (7.5)
  6. b) Derive Ehrenfest’s equation for a second order phase transition. (5)
  7. Explain Joule-Kelvin experiment and inversions curve and obtain an expression for Joule-Kelvin co-efficient.

 

   

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Loyola College B.Sc. Physics Nov 2006 Materials Science Question Paper PDF Download

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                   LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

AC 08

FIFTH SEMESTER – NOV 2006

PH 5402 – MATERIALS SCIENCE

(Also equivalent to PHY 402)

 

 

Date & Time : 01-11-2006/9.00-12.00      Dept. No.                                                       Max. : 100 Marks

 

 

 

PART A

Answer ALL questions:                                                                 10 x 2 = 20 marks

  1. Give  two examples for organic polymers which are used as engineering materials
  2. Explain briefly how the structure influences the property of materials.
  3. State Bragg’s law of X-ray diffraction.
  4. Draw the diagrams corresponding to the Miller indices (100), (111) and (001).
  5. Give the classification of materials on the basis of Poisson’s ratio.
  6. What is meant by true stress and true strain?
  7. List the advantages of SEM.
  8. Outline any one magnetic method of NDT.
  9. Explain the intrinsic breakdown in a dielectric material.
  10. Write the relation connecting the dipole moment density P and the electric field strength E.

PART B

 

Answer any FOUR questions:                                                      4 x 7.5 = 30 marks

  1. Illustrate the concept of stability and metastability using a tilting rectangular block.
  2. What is meant by symmetry operation?  Explain the symmetry elements of a crystalline solid.
  3. What are the essential features of Rubber like elasticity? Obtain the equation of state of the rubbery material.
  4. With neat diagram explain the Ultrasonic method of NDT.
  5. What are ferroelectric materials?  Discuss their properties.

PART C

 

Answer any FOUR questions:                                                    4 x 12.5 = 50 marks

  1. Discuss the formation of ionic bond in Sodium Chloride crystal.  Hence obtain the expression for the potential energy of the system.
  2. With neat sketch describe the powder method of XRD to determine the crystal structure.
  3. Discuss the atomic model of elastic behavior with necessary figures and derive the relations connecting y, γ, μ and κ.
  4. Draw a schematic diagram of an Electron Microscope and explain its working.
  5. Explain different types of Polarization and derive the expression for the total polarization of a material.

 

 

 

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Loyola College B.Sc. Physics Nov 2006 Atomic & Nuclear Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034                                   B.Sc. DEGREE EXAMINATION – PHYSICS

AC 09

FIFTH SEMESTER – NOV 2006

PH 5500 – ATOMIC & NUCLEAR PHYSICS

(Also equivalent to PHY 507)

 

 

Date & Time : 25-10-2006/9.00-12.00     Dept. No.                                                Max. : 100 Marks

 

 

 

PART – A

Answer ALL questions.                                                                     (10 x 2 = 20 Marks)

  1. Define excitation potential and ionization potential of an atom.
  2. What is Paschen-Back effect?
  3. State Mosley’s law.
  4. Describe how a photo-multiplier tube functions.
  5. Explain parity of nuclei.
  6. Define nuclear fission with example.
  7. What is chain reaction?
  8. What are pair production and annihilation?
  9. What are cosmic rays?
  10. Define range of alpha-particle.

PART – B

Answer any FOUR questions.                                                           (4 x 7.5 = 30 Marks)

  1. a. Discus the normal Zeeman effect. (4.5)
  2. Calculate the wavelength separation between the two component lines which

are observed in the normal Zeeman effect. The magnetic field used is 0.4    weber/m2;

the specific charge is 1.76×1011 C kg-1 and l = 6000 Å .        (3)

  1. State and explain the laws of photoelectric effect.
  2. Classify nuclei as isotopes, isobars, isotones, isomers, and mirror nuclei – Give examples.
  3. Explain Bohn and Wheeler theory of nuclear fission and estimate the energy released when a neutron breaks into proton and electron.
  4. Explain the latitude, East-West, and altitude effect of cosmic rays.

 

PART – C

Answer any FOUR questions.                                                           (4 x 12.5 = 50 Marks)

  1. a. Describe the construction of Aston’s Mass Spectrograph with necessary theory

and show how it can be used in the detection of isotopes.                (8+4.5)

  1. What are the advantages and limitations of Aston’s Mass Spectrograph? (p.54)
  2. a. Derive Einstein’s photo-electric equation and describe Millikan’s experiment, with theory, to verify the same.
  3. The photoelectric threshold for a metal is 3000 Å. Find the kinetic energy of an electron ejected from it by radiation of wavelength 1200 Å.

(Given: h = 6.62×10-34 Js and c=3×108 ms-1.)                          (9+3.5)

  1. What is nuclear magneton? Describe Rabi’s method to determine nuclear magnetic

moment.

  1. Explain proton-proton and carbon-nitrogen cycle of thermo nuclear fusion.
  2. a. Explain shell model of the nucleus.
  3. Calculate the atomic number of the most stable nucleus for a given mass number A.                                                                                                                              (8+4.5)

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Loyola College B.Sc. Physics Nov 2006 Allied Mathematics For Physics Question Paper PDF Download

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             LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034  B.Sc. DEGREE EXAMINATION – PHYSICS

AA 03

THIRD SEMESTER – NOV 2006

         MT 3100 – ALLIED MATHEMATICS FOR PHYSICS

(Also equivalent to MAT 100)

 

 

Date & Time : 28-10-2006/9.00-12.00         Dept. No.                                                       Max. : 100 Marks

 

 

Section A

Answer ALL the questions (10 x 2 =20)

  • Evaluate .
  • Expand and .
  • Prove that .
  • Find when .
  • Find
  • Find
  • Show that, in the curve , the polar subtangent varies as the square of the radius vector.

8)  Find the coefficient of  in the expansion of .

9)  Find the rank of the matrix

10) Mention a relation between binomial and Poisson distribution.

Section B

Answer any FIVE questions (5 x 8 = 40)

11) Find

12) Find

13) If , prove that.

14) If , prove that .

15) Find the slope of the tangent with the initial line for the cardioid

at   q = .

16) Find the inverse of the matrix using Cayley Hamilton

theorem.

17) Show that  .

18)  Suppose on an average one house in 1000 in Telebakkam city needs television

service  during  a  year. If  there  are  2000  houses  in  that  city,  what  is  the

probability  that exactly  5  houses will need  television service during the year.

Section  C

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

19) (a) Using Laplace transform solve  when x (0) = 7.5,

x’(0) = -18.5.

(b) Prove that cosh5x = 16cosh5x – 20cosh3x + 5coshx.                         (12+8)

20) (a) Expand cos4q sin3q in terms of sines of multiples of angle.

(b) If  prove that

(8+12)

21) (a) Find the eigen values and eigen vectors of the matrix

(b) Find the greatest term in the expansion of when .       (15+5)

 

22) (a) Find the angle of intersection of the cardioid and

.

(b) Eight coins are tossed at a time, for 256 times. Number of heads observed at

each throw is recorded and results are given below.

 

No of heads at a throw 0 1 2 3 4 5 6 7 8
frequency 2 6 30 52 67 56 32 10 1

 

What are the theoretical values of mean and standard deviation? Calculate also

the mean and standard deviation of the observed frequencies.                 (10+10)

 

 

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Loyola College B.Sc. Physics April 2007 Geo Physics Question Paper PDF Download

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  LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

SC 14

B.Sc.  DEGREE EXAMINATION –PHYSICS

FIFTH SEMESTER – APRIL 2007

PH 5400 – GEO PHYSICS

 

 

Date & Time: 30/04/2007 / 1:00 – 4:00     Dept. No.                                                     Max. : 100 Marks

 

 

PART –  A                  10×2=20 marks

Answer ALL  questions.

  1. How can one seismically distinguish between an earth quake and a large explosion?
  2. What is the implication of a shadow zone in the internal structure of the earth?
  3. Distinguish between Rayleigh and Love seismic surface waves.
  4. Give the significant differences between the body wave and the surface wave.
  5. Define the term focus and epicentre.
  6. Write down the Laplace’s and Poisson’s equation obeyed by the gravitational potential.
  7. Explain briefly the Gauss method of determining the earth’s magnetic field.
  8. Write a note on geological time scale.
  9. List the two possible sources of heat with in the earth.
  10. How are the ages of rocks determined?

PART – B

Answer any FOUR questions.                                                     4×7.5=30 marks

  1. What are P and S waves? Describe the method by which the epicentre of an earthquake is located.
  2. Outline the principle and construction of the strain seismograph.
  3. Write a brief account of the magnitude and occurance of earthquakes.
  4. Explain the dynamo theory of Earth’s magnetism with the help of the Faraday disc generator.
  5. Discuss the variation of temperature with in the earth.

PART-C                                                                                                                                        Answer any FOUR questions.                                               4×12.5=50 marks

  1. Discuss the analogy between an optic wave and a seismic wave interms of reflection and refraction phenomenon.
  2. Discuss the theory of horizontal seismograph with a neat diagram and explain all possible cases.
  3. Explain the working of a) Hammond and Faller method of measuring gravity and    b) Worden gravity meter with neat diagram.
  4. Explain the theory of a) saturation magnetometer and b) Alkali vapour magnetometer.
  5. Given the theory of radioactive dating of rocks and minerals using a) the decay scheme of Rb87 and b)the decay scheme of K40.____________________

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Loyola College B.Sc. Physics April 2007 Bioinformatics – II (Genomics & Proteomics) Question Paper PDF Download

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             LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS & CHEMISTRY

IB 38

FOURTH SEMESTER – APRIL 2007

PB 4204 – BIOINFORMATICS – II (GENOMICS & PROTEOMICS)

 

 

 

Date & Time: 19/04/2007 / 9:00 – 12:00 Dept. No.                                              Max. : 100 Marks

 

 

PART A

Answer all the following questions                                                                         (20 marks)

  1. Choose the correct answer (5 x 1  = 5 )

 

  1. ________ score presents the signal peptide cleavate site .
  2. a) C b) S c) A     d) Y
  3. PDB is a database of ________.
    1. secondary structures b) transmemrane helices
    2. c) 3D structures d) motifs.
  4. The noncoding regions of genomes are known as ________.
  5. a) introns b) exons c) promoter      d) signal peptides.
  6. 5‘ capping is a ________modification.
    1. post transcriptional b) translational
    2. c) splicing d) sequencing.
  7. ________ is the software for promoter site prediction.
    1. promoter 2.0 b) promoter 3.0
    2. c) promoter 6.0 d) promoter 1.0

 

  1. State whether the following statements are True or False (5 x 1 = 5 )
  1. Gene cloning can be used to produce insulin.
  2. Codon bias is the unequal usage of codons for aminoacids.
  3. C score is used to predict the signal peptide cleavate sites.
  4. Genscan predicts INIT, INTR and TERM exons.
  5. Promoter regions are present in the upstream region of the genes.

 

III. Complete the following                                                                              (5 x 1 = 5)

  1. Donor site is the beginning of ________.
  2. ________ is the enzyme for bioluminescence in glow worms.
  3. ________ are the enzymes used to cut DNA sequences.
  4. ________ are used as vectors in cloning.
  5. ________ is the software for visualizing protein structures.

 

  1. Answer the following each within 50 words . (5 x 1 = 5)
  2. What is Splicing ?.
  3. Explain Drought resistance.
  4. Discuss the Importance of CpG island.
  5. What is an atomic coordinate file ?.
  6. Define : exon.

PART B

 Answer any five of the following each in about 350 words. Draw diagrams wherever necessary.                        

                                                                                                                                                (5 x 8 = 40)

  1. Discuss the applications of bioinformatics.
  2. Explain the software for the prediction of post translational modification (glycosylation).
  3. Explain the signalp software in detail.
  4. Discuss any two softwares for the analysis of genomes.
  5. Explain the software for the prediction for transmembrane helix prediction.
  6. Discuss codon usage databases and their applications.
  7. Discuss Netgene 2 and its applications.
  8. Discuss about promoter 2.0 and its output format.

PART C

Answer the following questions in about 1500 words. Draw  diagrams wherever necessary                      

                                                                                                                                                (2 x 20 = 40)

  1. a) Explain gene cloning with Insulin as an example.

OR

  1. Discuss the gene prediction software genscan in detail.

 

  1. a) Discuss the applications of Bioinformatics..

OR

  1. Explain DNA sequencing in detail.

 

 

 

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Loyola College B.Sc. Physics April 2007 Allied Mathematics For Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc.

CV 08

DEGREE EXAMINATION –PHYSICS

THIRD SEMESTER – APRIL 2007

MT 3100 – ALLIED MATHEMATICS FOR PHYSICS

 

 

Date & Time: 28/04/2007 / 9:00 – 12:00        Dept. No.                                                     Max. : 100 Marks

 

 

 

Section A

Answer ALL the questions (10 x 2 =20)

1) Evaluate.

2) Find .

3) Find .

4) If cos5q = Acosq + Bcos3q+ Ccos5q , prove that

sin5q = A sinq -Bsin3q + Csin5q.

5) If  , prove that .

6) If y = e 2x, prove that .

7) Show that in the curve r = e q cot a , the polar subtangent is rtana.

8) Derive the expansion of  .

9) Find the coefficient of  in the series

10) Explain the concept of mutually exclusive events with an example.

 

Section B

Answer any FIVE questions (5 x 8 = 40)

11) Determine a, b, c so that .

12) Find  L[t2 e -t cost].

13) Using Laplace transform solve , given.

14) Prove that  .

15) If , prove that .

16)  Verify Cayley Hamilton theorem for the matrix .

17)  Sum the binomial series  .

 

18)  Assuming that half the population own a two wheeler in a city so that the chance

of an individual  having a two  wheeler is ½  and assuming that 100 investigators

can  take sample of 10 individuals  to see  whether  they own a two wheeler, how

many  investigators  would you expect  to report  that  three  people or  less  were

having two wheelers.?

 

Section  C

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

19) Solve , given x(0) = 0: y(0)=2 using Laplace

transform.

20) (a) Find the real and imaginary parts of sin (x+iy) and tan(u + iv).

If , prove that .

(b) If  , prove that .                                  (10+10)

21) a) Find the angle at which the radius vector cuts the curve .

  1. b) A person is  known to hit  target in 3 out  of 4 shots, whereas another person is

known to hit the target 2 out of 3 shots. Find the probability of the targets being

hit at all shots when they both try.

  1. c) A bag contains 5 white  and  3 black balls. Two balls are drawn at random one

after the other without  replacement. Find  the probability that both balls drawn

are black.                                                                                                (10+5+5)

22) a) Find the eigen values and eigen vectors of the matrix

  1. b) Find the first term with a negative coefficient in the expansion of

(15+5)

 

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Loyola College B.Sc. Physics Nov 2007 Materials Science Question Paper PDF Download

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