B.Sc Corporate Physics Question Paper 2012

Loyola College B.Sc. Physics Nov 2011 Atomic & Nuclear Physics Question Paper PDF Download

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Loyola College B.Sc. Physics April 2012 Thermodynamics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

THIRD SEMESTER – APRIL 2012

PH 3505/PH 3503 – THERMODYNAMICS

 

 

 

Date : 26-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

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

 

  1. Define Brownian Motion.
  2. Give the unit of thermal conductivity.
  3. Write down the equations of state for an ideal gas when it undergoes a

reversible isothermal and adiabatic changes.

  1. Define super fluidity.
  2. Given of an ideal gas is 2R, where R is the gas constant, determine the adiabatic

exponent  .

  1. State the 2nd law of thermodynamics.
  2. Write down the Gibbs – Helmholtz equation.
  3. Define phase transition. Give an example.
  4. Define microstates and macrostates.
  5. Classify the following particles according to the statistics they obey:
  6. i) electrons        ii) photons    iii) protons and        iv) helium-4.

 

PART – B

 

Answer Any FOUR questions:                                                                                  (4×7.5=30)

 

  1. Obtain an expression for the coefficient of thermal conductivity of a gas, on the basis of

kinetic theory of gases.

  1. Describe Linde’s process for the liquefaction of air.
  2. a) Write the first law of thermodynamics. What does it signify?  (2+5.5)
  3. b) One mole of oxygen, initially at 17°C, is adiabatically compressed so that its pressure

becomes 10 times the initial value. Find its final temperature and the work done.

  1. Obtain the Maxwell’s thermodynamic relations.
  2. a) Define thermodynamic probability. (2+5.5)
  3. b) Obtain an expression for the solar constant in terms of the Sun’s

temperature, its radius, the mean Sun-Earth distance etc.

 

 

PART – C

 

Answer Any FOUR questions:                                                                                   (4×12.5=50)

 

  1. Discuss Langevin’s theory of Brownian motion.
  2. a) Discuss Clement-Desormes method to determine the ratio of specific heats.
  3. b) Describe the properties of He I and He II.                                                           (8+4.5)
  4. a) Define reversible and irreversible processes.
  5. b) Obtain the Clausius inequality.                                                                                     (4+8.5)
  6. Explain Joule-Kelvin effect. Obtain an expression for the Joule-Kelvin coefficient.

Discuss the significance of the various terms in it.

  1. Obtain the Maxwell-Boltzmann distribution for an ideal gas.

 

 

 

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Loyola College B.Sc. Physics April 2012 Solid State Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

SIXTH SEMESTER – APRIL 2012

PH 6610/PH 6606 – SOLID STATE PHYSICS

 

 

 

Date : 18-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

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

 

  1. Define Bravais lattice.
  2. Copper crystallizes in FCC structure and the atomic radius r = 1.278A˚. Calculate the lattice parameter and hence the cell volume.
  3. State two significant uses of Laue’s diffraction technique.
  4. State Bragg’s law.
  5. Define specific heat capacity.
  6. State Einstein’s assumption in deriving the expression for specific heat. What was the major drawback of this method?
  7. State Wiedemann Franz law.
  8. What is Hall constant? How is this employed to determine charge concentration?
  9. What is Levitation?
  10. Give the difference between Type I and Type II superconductors.

 

PART – B

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

  1. Describe the seven crystal systems in three dimension, illustrating the lattice parameters for

atleast one kind in each system.

  1. Explain the condition for diffraction to occur by deriving the Laue’s equations.
  2. Derive an expression for density of modes for a cube (3d) of edge L.
  3. Derive expression for electric conductivity using Sommerfield theory.
  4. Explain the phenomenon of superconductivity using the BCS theory.

 

PART – C

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

  1. (a) What are Miller Indices? Write the procedure for finding the Miller Indices of a

given plane.

(b) Determine the Miller Indices of set of planes that make an intercept in the ratio of

4a:4b on the x and y axis and is parallel to z axis, a, b and c being the primitive

vectors.

  1. (a) Explain the determination of crystal structure using rotating crystal method.
  • A beam of x-rays is incident on a NaCl crystal with lattice spacing 0.282nm. Calculate the wavelength of x-ray if the first order Bragg’s reflection takes place at a glancing angle of 8˚35’. What is the maximum order of diffraction possible?
  1. Derive the expression for specific heat of a solid using Debye Model.
  2. Obtain the expression for paramagnetic susceptibility of a free electron gas.
  3. Write notes on
  • Meissner Effect (b) Josephson Effect

 

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Loyola College B.Sc. Physics April 2012 Quantum Mechanics & Relativity Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

SIXTH SEMESTER – APRIL 2012

PH 6609/PH 6605/6003/6600 – QUANTUM MECHANICS & RELATIVITY

 

 

 

Date : 16-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

SECTION – A

Answer ALL the questions:                                                                       (10 × 2 = 20 Marks)

  1. Mention the important properties of de Broglie waves.
  2. What are the important applications of an electron microscope?
  3. Give the physical significance of the wave function.
  4. What do you mean by tunneling through a potential barrier?
  5. What is Hermitian operator?
  6. Show that [Lx, Ly] = i ħ Lz.
  7. What will be the speed of a photon in one reference frame if it moves with a speed c in another frame of reference?
  8. Calculate the rest mass energy of an electron in eV.
  9. State Mach’s principle.
  10. State the principle of equivalence.

 

SECTION – B

Answer any FOUR questions:                                                                             (4 × 7.5 = 30 Marks)

  1. (a) Distinguish between optical microscope and electron microscope.                                      (5)

(b)  Calculate de-Broglie wavelength associated with a proton moving with (1/30)c

(h= 6.62 × 10-34Js and m = 1.67×10-27kg).                                                                       (2.5)

  1.  (a) Write down Schrödinger equation and eigen values for a linear harmonic

oscillator.                                                                                                                             (2+2)

(b)  Discuss zero point energy.                                                                                                  (3.5)

  1. (a) What do you mean by eigen functions and eigen values?                                            (1.5+1.5)

(b)  Prove that every eigen value of Hermitian operator is real.                                                (4.5)

  1. On the basis of Lorentz transformations discuss (i) length contraction and (ii) time dilation.                                                                                                                               (4+3.5)
  2. (a) What do you mean by inertial mass and gravitational mass?                                    (1.5+1.5)

(b)  Discuss the Red shift of spectral lines in a gravitation field.                                             (4.5)

 

SECTION – C

Answer any FOUR questions:                                                                      (4× 12.5 = 50 Marks)

 

  1. (a) Describe, with neat diagrams, the experiment of Davisson and Germer on the

diffraction of electrons to establish the wave nature of matter.                                         (10)

(b)   If the uncertainty in the location of a particle is equal to its de Broglie wavelength,

What is the uncertainty in its velocity?                                                                             (2.5)

 

  1. Solve the Schrödinger equation for a particle moving in one dimensional potential well

of finite depth to find eigen functions and eigen values.

 

  1. Solve the radial part of Schrödinger equation for the hydrogen atom to obtain eigen

values of energy.

 

  1. Describe the Michelson-Morley experiment and discuss the various interpretations for

the negative result of the experiment.                                                                                    (10+2.5)

 

  1. Discuss the motion of a planet in the gravitational field of the sun and explain the

advance of the perihelion of Mercury.                                                                                   (8+4.5)

 

 

 

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Loyola College B.Sc. Physics April 2012 Properties Of Matter & Acoustics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIRST SEMESTER – APRIL 2012

PH 1502/PH 1501/1500 – PROPERTIES OF MATTER & ACOUSTICS

 

 

 

Date : 28-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

               PART – A

Answer ALL questions:                                                                                                        (10×2=20 Marks)   

 

  1. State Hook’s law.
  2. Explain the term neutral axis in bending of a beam.
  3. Distinguish streamline and turbulent motion of a liquid .
  4. Explain the principle of Pirani Gauge.
  5. Write down the unit and dimension of surface tension .
  6. What happens when a capillary tube is dipped in water and mercury?
  7. Mention any two conditions for causing interference in sound waves.
  8. Find the wavelength of sound produced by a tuning fork of frequency 400Hz. Given velocity of sound wave is 320m/sec.
  9. Define reverberation time
  1. A hall of volume 5500m3 is found to have a reverberation time of 2.3 sec. The sound absorbing surface of the hall has an area of 750m2. Calculate the average absorption coefficient.

 

PART – B

 

      Answer any FOUR questions:                                                                        (4×7.5=30 Marks)

 

  1. a) Derive the expression for the period of oscillation of a cantilever. (3+4.5)
  2. b) Describe with necessary theory, the oscillation method to determine the Young’s

modulus of a cantilever. (Assume mass of the cantilever is negligible).

  1. a) Discuss briefly the method of comparing coefficient of viscosities of two liquids using

Ostwald viscometer.                                                                                                                        (5+2.5)

  1. b) What are the advantages of Ostwald viscometer ?
  2. a) Explain how surface tension is accounted for using molecular theory. (4+3.5)
  3. b) Explain the variation of surface tension with temperature.
  4. Distinguish between progressive and stationary wave.
  5. Write a note on any five applications of ultrasonics.

 

 

 

 

PART – C

 

      Answer any FOUR questions:                                                                       (4×12.5=50 Marks)

    

  1. a) Describe Koenig’s method for the determination of Young’s modulus of a beam. (9+3.5)
  2. b) A uniform metal disc of diameter 0.1m and mass 1.2kg is fixed to the lower end of a torsion wire of

length 1m and diameter 1.4×10-3m. Calculate the rigidity modulus of  the material of the wire,

if  period of oscillation is 2sec.

  1. a) Explain the principle and working of a Knudsen gauge.             (9+3.5)
  2. b) Calculate the mass of water flowing 10 minutes through a tube of 0.001m diameter and 0.4m long,

if there is a constant pressure head of 0.2m of water. Coefficient of water is 0.00082 Nsm-2.

  1. a) Describe the Jaeger’s method for the determination of surface tension of a liquid. (8+4.5)
  2. b) Discuss the advantages and disadvantages of the method.
  3. a) What is Doppler effect? (2.5+10)
  4. b) Derive an expression for the change in frequency when i) observer is at rest and source is in

motion and ii) observer is in motion and source is at rest.

  1. Discuss the salient points associated with acoustics of an auditorium.

 

 

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Loyola College B.Sc. Physics April 2012 Physics For Mathematics – II Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FOURTH SEMESTER – APRIL 2012

PH 4206/4200 – PHYSICS FOR MATHEMATICS – II

 

 

Date : 19-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

Answer ALL questions                                                                                                                 (10×2=20)

 

  1. Convert (35.676)2 to its hexadecimal equivalent.
  2. State any two laws of Boolean Algebra.
  3. Give any two industrial applications of X rays.
  4. What are isotones? Give examples.
  5. What are fundamental interactions?
  6. What is the significance of BE/A curve?
  7. Give the conditions for good acoustical design of rooms.
  8. Give reasons for failure of Classical Mechanics.
  9. State Wein’s displacement law.
  10. Calculate the de Broglie wavelength of an electron having K.E of 1eV.

 

PART – B

Answer any FOUR questions                                                                                                   (4×7.5 = 30)

 

  1. Explain the effect of pressure, temperature, density and humidity on velocity of sound in gases.
  2. At what temperature the velocity of sound is twice the value of velocity of sound at 0° C?
  3. Describe Davisson and Germer experiment for the study of electron diffraction.
  4. What are elementary particles? How are they classified?
  5. How are X rays produced? Differentiate continuous X ray spectra with characteristic X ray spectra.
  6. Explain the working of a RS and JK flip flop with their truth tables.

 

PART – C

Answer any FOUR questions                                                                                                  (4×12.5 =50)

 

  1. Explain the description and working of a decade counter with its truth table.
  2. State Bohr’s postulates. Explain the Bohr’s atom model in the case of hydrogen atom and derive an expression for the radius of the nth orbit.

18  a. Explain in detail the liquid drop model for a nucleus.                         (8)

  1. The experimentally measured mass of π meson is 140MeV/c2. Estimate the range of nuclear force.                                                                                                                                                (4.5)
  2. Define reverberation time. Derive an expression for Sabine’s reverberation formula.
  3. Derive the time-independent Schrodinger equation. Comment on the physical interpretation of the wave function.

 

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Loyola College B.Sc. Physics April 2012 Optics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – APRIL 2012

PH 5509/PH 5506/PH 3500 – OPTICS

 

 

 

Date : 30-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

 

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

  1. What are nodal planes?  When do nodal points coincide with the principal points?
  2. What is Abbe’s sine condition?  Where is it applied?
  3. What is the principle behind the appearance of beautiful colors produced by the thin film of soap bubble?
  4. What is fringe width?
  5. What is a zone plate? In which aspect is it different from a convex lens?
  6. What is grating element? Write one use of grating
  7. If the refractive index of glass is 1.5, what is the angle of polarization?
  8. Which type of crystals exhibit double refraction? why? Give an example
  9. Write down any four characteristics of laser beam?
  10. Differentiate between spontaneous emission and stimulated emission

 

PART – B

Answer any FOUR questions:                                                                     [4 x 7.5 = 30 marks]

 

  1. Compare and contrast Huygen’s eyepiece and Ramsden’s eye piece.
  2. The width of the fringes obtained on a screen kept at a distance 80 cm from a biprism is 9.424 x 10 – 8 cm. What is the distance between the two coherent sources if the wave length of sodium light used is 5890 A0?
  3. What is Rayleigh’s criterion for the resolution of spectral lines? Obtain an expression for the resolving power of a telescope.
  4. How would you produce, detect [a] plane polarized and [b] circularly polarized light?
  5. What is non linear optics? Explain how second harmonics are generated?

 

 

 

 

PART – C

Answer any FOUR questions:                                                                     [4 x 12.5 = 50 marks]

 

  1. [a] Define the term dispersive power. [b] Explain how two narrow angled prisms of different dispersive powers may be combined to produce [i] dispersion without deviation and [ii] deviation without dispersion.
  2. With the neat diagram, describe the construction and working of a Michelson’s interferometer and discuss its applications.
  3. What is Fraunhofer diffraction? Discuss the Fraunhofer diffraction pattern due to a single slit and hence explain how the wavelength of light is determined using it.
  4. What is optical activity? Outline the principle and working of a half shade polarimeter and explain how the specific rotation of glucose is determined using it.
  5. With the neat diagram, explain the construction, principle of working , energy level diagram  and applications of He – Ne laser.

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Loyola College B.Sc. Physics April 2012 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 2012

MT 3102/3100 – MATHEMATICS FOR PHYSICS

 

 

Date : 28-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

Section A

Answer ALL questions:                                                                                 (10 ´ 2 = 20)

  1. Find the nth derivative of e4x.
  2. Show that in the curve rq = a, the polar sub tangent is constant.
  3. Expand in ascending powers of x, ‘a’ being positive.
  4. Define a symmetric matrix and give an example.
  1. Find the Laplace transform of t2 + 2t + 3.
  1. Find .
  2. Prove that .
  3. Write down the expansion of and  in a series of ascending powers of .
  4. Two dice are thrown. What is the probability that the sum of the numbers is greater than 8?
  5. Write a short note on binomial distribution.

 

Section B

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

  1. Find the nth differential coefficient of sinx sin2x sin3x.

 

  1. Find the angle of intersection of curves rn = ancosnq and rn = an sinnq.

 

  1. Show that .
  2. Show that the matrix is orthogonal.

 

  1. Find the Laplace transform of

 

  1. Separate into real and imaginary parts of .
  2. Prove that .

 

  1. Calculate the mean and standard deviation for the following frequency distribution:
Class Interval 0 – 8 8 – 16 16 – 24 24 – 32 32 – 40 40 – 48
Frequency 8 7 16 24 15 7

 

Section C

 

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

 

  1. a) If y = acos(logx) + bsin(logx), prove that x2yn + 2 + (2n + 1)xyn + 1 + (n2 + 1)yn = 0.
  2. b) Find the sum to infinity of the series .

(12 + 8)

20.a) Find the characteristic roots of the matrix .

  1. b) Verify Cayley Hamilton Theorem for matrix and also find .                                                                                                              (6 + 14)
  2. a) Find .
  3. b) Solve the equation given that when t = 0.

(5 + 15)

  1. a) Ifprove that .
  2. b) Express in a series of sines of multiples of θ.
  3. c) A car hire firm has two cars, which it hires out day by day. The number of demands for a car on each day is distributed as a Poisson distribution with mean 1.5. Calculate the proportion of days on which (i) neither car is used, and (ii) the proportion of days on which some demand is refused.                                                                                                                                            (8+5+7)

 

 

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Loyola College B.Sc. Physics April 2012 Mathematical Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FOURTH SEMESTER – APRIL 2012

PH 4504/4502/6604 – MATHEMATICAL PHYSICS

 

 

 

Date : 21-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART-A

 

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

 

  1. Given z1 = a – i and z2 = a + i find z1* z2, for any real ‘a’.
  2. Verify that f(z) = x2-y2+2ixy is analytic.
  3. Evaluate.
  4. Define the eigen vale problem for the operator.
  5. Find ‘c’ if u(x,t) = x2+at2 is a solution to the wave equation

.

  1. What is singular point of a complex function in a region.
  2. Write down a homogeneous first order partial differential equation in two variables.
  3. State Parsavel’s theorem.
  4. Write down the difference operator for f(x) by ‘h’.
  5. Write down trapezoidal rule for integration.

PART-B

 

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

 

  1. a). Show that |z-i|2 = 1 describes a circle centered at the (0,i) with radius 1.

b). Simplify (1+i)(2+i) and locate it in the complex plane.

  1. If ‘C’ is a line segment from -1-i to 1+i evaluate .
  2. Derive the partial differential equation satisfied by a vibrating elastic string subject to

a tension ‘T`.

  1. If F(s) is the Fourier transform of f(x), show that F{f(ax)} = (1/a)F(s/a) and

F{f’(x)} = –is F(s). Here the prime denotes differentiation with respect to ‘x’.

  1. Obtain the Lagrange’s interpolation polynomial of degree two for the following data:

(x,y): (0,0),(1,3),(2,9)

 

 

 

PART-C

 

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

 

  1. Establish that the real and complex part of an analytic function satisfies the Laplace equation.

 

  1. a) State and prove Cauchy’s integral theorem.
  2. b) Verify the integral theorem for , where c is a circle of radius 1.
  3. Obtain the Laplacian operator in polar form from the Cartesian form.
  4. a) State and prove convolution theorem for the Fourier transforms.
  5. b) Find the Fourier sine transform of .
  6. Derive the Newton’s forward interpolation formula and deduce the Trapezoidal and Simpson’s rule

for integration.

 

 

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Loyola College B.Sc. Physics April 2012 Electronics – II Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – APRIL 2012

PH 5404/5401 – ELECTRONICS – II

 

 

Date : 27-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

Answer ALL questions                                                                                              (10×2=20)

  1. Write a short note on logarithmic amplifier.
  2. Calculate the cut off frequency for a second order high pass filter given R2 =10 kΩ,
    R3 =10 kΩ, C2= 1µF, C3 =1µF, R1 = 20kΩ, R2=10kΩ.
  3. Differentiate analog and digital signals
  4. What is meant by accuracy in a D/A converter?
  5. What is meant by etching in IC terminology?
  6. What is VLSI?
  7. What is PSW?
  8. State the difference between ADD and ADC instructions of 8085.
  9. Define opcode and operand.
  10. Write a program to add 05 and 04 by immediate mode of addressing in microprocessor 8085.

 

PART – B

Answer any FOUR questions                                                                                                (4×7.5 = 30)

  1. Solve the following differential equation using operational amplifiers. d2y/dt2 2dy/dt+3y–1=0.
  2. Explain with circuit the working of OP-AMP based integrator.
  3. Discuss with a neat diagram the working of a counter type A/D converter.
  4. What is addressing? Explain in detail about the different addressing modes in µP 8085.
  5. Write an assembly language program to determine the smallest number in an array of 10 numbers.

 

PART – C

Answer any FOUR questions                                                                                                (4×12.5 =50)

  1. With a neat diagram explain in detail the working of an OP-AMP based monostable multivibrator. Obtain the expression of the pulse width.
  2. (a) Explain with circuit, the working of a 4 bit binary weighted D/A converter with OP-AMP      (6.5)

(b) For a 4 bit binary weighted resistor D/A converter determine the following (i) output voltage when MSB is set. (ii) Output voltage for 1011 (iii) Full scale voltage. Assume 0=0V and 1=5V. Rf=R/8   (6)

  1. (a) Discuss in detail the fabrication of resistor. (6.5)

(b) Write short notes on linear and non-linear integrated circuits.                       (6)

  1. Explain in detail about the classification of instruction sets in microprocessor 8085.
  2. Write an assembly language program to evaluate the expression x2+xy+y2 using subroutine.

 

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Loyola College B.Sc. Physics April 2012 Electronics – I Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

THIRD SEMESTER – APRIL 2012

PH 3504/PH 3502/PH 5501 – ELECTRONICS – I

 

 

 

Date : 24-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART –A                                                      

Answer all questions:                                                                                                            (10 x 2 = 20)

 

  1. A DC source generating 500 V has an internal resistance of 1000 Ω. Find the load current if load resistance is 50 Ω and 100 Ω.
  2. State the condition for transfer of maximum power from a source to load.
  3. What is the need for biasing a transistor?
  4. What is a multivibrator?
  5. Define CMRR.
  6. Give the basic construction of UJT.
  7. Give the block diagram of a multiplexer.
  8. Draw the logic symbol and truth table for T flip flop.
  9. What is a shift register?
  10. Write a brief note on RAM.

 

PART – B     

 

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

 

  1. Use the principle of superposition to find the current in the 4 Ω resistor in the circuit given below:

 

 

 

 

  1. Discuss the working of RC coupled amplifier with a neat circuit diagram.
  2. Explain how op-amp can be used as a summing and difference amplifier.
  3. Discuss the construction and working of 4 bit a parallel binary adder.
  4. Design the logic circuit for 3 bit down counter and explain its working with the help of truth table.

 

PART – C     

 

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

 

  1. Obtain the general expression for input impedance, current gain and voltage gain of a transistor in terms of h parameters and load resistance. Deduce the same for a transistor used in CE mode.
  2. a) Explain the principle of phase shift oscillator and describe its working with a neat

diagram.

  1. b) Describe the working of bistable multivibrator. (7 + 5.5)
  2. Describe the construction and working of SCR. Also explain how it can be used as an half wave rectifier.
  3. With a neat circuit diagram and truth table describe the operation of a J-K Master Slave flip flop.
  4. Discuss the working of a bi-directional shift register with a neat block diagram.

 

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – APRIL 2012

PH 5404/5401 – ELECTRONICS – II

 

 

Date : 27-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

Answer ALL questions                                                                                              (10×2=20)

  1. Write a short note on logarithmic amplifier.
  2. Calculate the cut off frequency for a second order high pass filter given R2 =10 kΩ,
    R3 =10 kΩ, C2= 1µF, C3 =1µF, R1 = 20kΩ, R2=10kΩ.
  3. Differentiate analog and digital signals
  4. What is meant by accuracy in a D/A converter?
  5. What is meant by etching in IC terminology?
  6. What is VLSI?
  7. What is PSW?
  8. State the difference between ADD and ADC instructions of 8085.
  9. Define opcode and operand.
  10. Write a program to add 05 and 04 by immediate mode of addressing in microprocessor 8085.

 

PART – B

Answer any FOUR questions                                                                                                (4×7.5 = 30)

  1. Solve the following differential equation using operational amplifiers. d2y/dt2 2dy/dt+3y–1=0.
  2. Explain with circuit the working of OP-AMP based integrator.
  3. Discuss with a neat diagram the working of a counter type A/D converter.
  4. What is addressing? Explain in detail about the different addressing modes in µP 8085.
  5. Write an assembly language program to determine the smallest number in an array of 10 numbers.

 

PART – C

Answer any FOUR questions                                                                                                (4×12.5 =50)

  1. With a neat diagram explain in detail the working of an OP-AMP based monostable multivibrator. Obtain the expression of the pulse width.
  2. (a) Explain with circuit, the working of a 4 bit binary weighted D/A converter with OP-AMP      (6.5)

(b) For a 4 bit binary weighted resistor D/A converter determine the following (i) output voltage when MSB is set. (ii) Output voltage for 1011 (iii) Full scale voltage. Assume 0=0V and 1=5V. Rf=R/8   (6)

  1. (a) Discuss in detail the fabrication of resistor. (6.5)

(b) Write short notes on linear and non-linear integrated circuits.                       (6)

  1. Explain in detail about the classification of instruction sets in microprocessor 8085.
  2. Write an assembly language program to evaluate the expression x2+xy+y2 using subroutine.

 

 

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Loyola College B.Sc. Physics April 2012 Electricity & Magnetism Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIFTH SEMESTER – APRIL 2012

PH 5508/PH 5505/PH 4500 – ELECTRICITY & MAGNETISM

 

 

 

Date : 27-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART- A

 

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

 

  1. Define relative permittivity.
  2. Compute the electric field due at a distance of 2 x10-8 m on a line making an angle of 450 with the dipole axis from the centre of the dipole, the dipole moment, p = 6.4 x 10 -29
  3. Define equivalent conductivity of an electrolyte.
  4. A reversible cell has an e.m.f of 1 volt at 0 o Calculate the change in its e.m.f when its temperature rises to 1 oC, given H = 1.092 J/C.
  5. Give an application of Biot Savart’s law.
  6. State Ampere’s circuital law.
  7. What is meant by wattles current?
  8. Define form factor.
  9. Write down Maxwell’s equations.
  10. Distinguish between dia, para and ferromagnetic substances.

 

PART – B

 

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

 

  1. State Gauss’s law. Apply it to determine the electric field due to a uniformly charged sphere at a point P,   a) inside,          b) on and         c) outside the sphere.
  2. Explain the experimental method of using the Carey Foster’s bridge to determine the temperature coefficient of resistance.
  3. Determine the magnetic induction at a point due to a straight conductor carrying current using Biot Savart’s law.
  4. Why is a parallel resonance circuit called as the rejector circuit? Prove that in a parallel resonance circuit, impedance is inversely proportional to the resistance.
  5. Explain domain theory of ferromagnetism.

 

PART – C

 

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

 

  1. a) Derive an expression for the capacitance of a parallel plate capacitor. Discuss the effect of a

dielectric in the capacitance of a parallel plate capacitor.

  1. The area of each plate of a parallel plate capacitor is 4 x 10-2 m2. If the thickness of the dielectric medium between the plates is 10-3 m and the relative permittivity of the dielectric is 7, find the capacitance of the capacitor.
  1. Define Peltier and Thomson coefficients. Obtain the relation between the two.
  2. Describe an experiment to determine the mutual inductance between two coaxial solenoids.
  3. Discuss the decay of charge in an LCR circuit.
  4. Explain in detail Langevin’s theory of paramagnetism.

 

 

 

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Loyola College B.Sc. Physics April 2012 Bioinformatics – I Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS, COMPUTER SCI. & APPL.

THIRD SEMESTER – APRIL 2012

PB 3208/3202 – BIOINFORMATICS – I

 

 

 

Date : 02-05-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART- A

Answer all the questions:                                                                                            (20 marks)

 

I Choose the correct answer :                                                                                    (5×1=5 marks)

  1. Where is ribosome located in plant and animal cell?
  2. a) inside the nucleus b) on the endoplasmic reticulum
  3. c) near the cell membrane d) inside the vacuole

 

  1. The database that classifies protein according to their structure and function is _______________.
  2. a) PIR-PSD b) i Proclass                 c) ALN                                    d) RESID

 

  1. The one that collects and processes sequence data for PIR-international is ________________.
  2. a) MIPS b) PATS                      c) SMD                                   d) DIP

 

  1. Cells were first discovered by _____________.
  2. a) Robert hooke b) George kohler         c) Edward jenner        d) Pasteur

 

  1. Identify the protein structure analysis database.
  2. a) RCSB-PDB b) RasMol                   c) ProtParam               d) Web-Thermodyn

 

II State whether the following statements are True or False:                               (5×1=5 marks)

  1. ProtParam computes various physico-chemical properties of proteins.
  2. UAA is a start codon.
  3. 3ˊ- 5ˊstrand is called a non-coding strand.
  4. RasMol is licensed dually.
  5. Smith-Watermann algorithm is used to align multiple sequences.

 

III Complete the following:                                                                                      (5×1=5 marks)

  1. JSTOR stands for ________________.
  2. PDB is generated by ______________.
  3. Secondary structure of DNA was proposed by _________________.
  4. RasMol is otherwise called as ___________.
  5. Low helical stability region is predicted by _______________.

 

IV Answer the following each in about 50 words:                                                 (5×1=5 marks)

 

  1. What are restriction enzymes?
  2. Define protein synthesis.
  3. Name the 3 institutes that contribute towards International Nucleotide Sequence database

collaboration?

  1. Illustrate the central dogma of molecular biology.
  2. Write the applications of HGP.

                                               

PART – B

 

Answer the following, each answer within 500 words; Draw diagram wherever necessary:                                                                                                                                                         (5 × 8 = 40 marks)

  1. a) Give an account on the cytoplasmic organelles of eukaryotic cell.

OR

  1. b) Briefly explain transcription process.
  2. a) Write notes on i) EMBL ii) DDBJ

OR

  1. b) Give details of the currently used human genome project.
  2. a) Write short notes on i) disease database                  ii) journal database

OR

  1. b) Explain the steps involved in Needleman and Wunsch algorithm.
  2. a) Describe Chou- Fasman method.

OR

  1. b) Give an account on different types of BLAST program.
  2. a) Explain the software used for visualizing the 3D structure of proteins.

OR

  1. b) Elucidate the software used for predicting the physical properties of nucleic acids.

 

PART – C

 

 Answer any TWO of the following, each answer within 1500 words; Draw diagram wherever necessary:                                                                  (2 × 20 = 40 marks)

 

  1. Draw a Smith-Watermann algorithm for the following using the values of match: 1, mismatch:

0, gap: -1

ADCNGRQCLCRPM

AGCGNRCKCRP

  1. Describe the structure and functions of DNA.
  2. Write notes on i) PIR ii) Swissprot
  3. Explain secondary structure prediction on proteins.

 

 

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Loyola College B.Sc. Physics April 2012 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 2012

PH 5507/PH 5504/5500 – ATOMIC & NUCLEAR PHYSICS

 

 

 

Date : 25-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART-A

       Answer All  Questions:                                                                                (10×2=20 marks)

  1. Write down the quantum numbers of the electrons occupying the K shell.
  2. What is Compton Effect?
  3. State the differences between Isotopes and Isobars.
  4. State the Geiger -Nuttal law. Draw the graph that represents it.
  5. Write a short note on nuclear chain reaction.
  6. What is meant by nuclear fusion? Give an example.
  7. State any two properties of Nuclear forces.
  8. What are quarks? How are the proton and meson made up from quarks?
  9. What is meant by Larmor precession?
  10. What is Mossbauer effect? Give any one of its important applications.

                                                                    PART-B

Answer ANY FOUR  Questions:                                                                      (4X7.5=30 marks)

  1. Describe the Stern and Gerlach experiment.
  2. i) Write short note on  Packing fraction.                                                                (3.5marks)
  3. ii) Define Nuclear Magneton. Calculate its value.                                                 (4marks)

 

  1. Explain about Neutron sources in detail.

 

  1. What are cosmic showers? Discuss the theory of their formation.

 

  1. What is meant by chemical shift in NMR? Explain how it can be measured?

 

PART–C

 

Answer ANY FOUR Questions:                                                                          (4×12.5 = 50marks)

 

  1. a) Describe Thompson’s parabola method. Discuss its limitations.      (7 marks)

 

  1. b) Explain Anomalous Zeeman Effect.                                                                (5.5 marks)

 

  1. Explain:  i) Beta ray spectra                                                                         (4.5 marks)
  2.               ii) Inverse beta decay                                                                    (4 marks)

iii) Detection of neutrino.                                                             (4 marks)

 

  1. i) Derive the four factor formula for nuclear fission.             (6.5 marks)
  2. ii) Discuss the Bohr Theory of compound nucleus.                        (6 marks)

 

 

  1. i) List out any five similarities between a liquid drop and a nucleus.       (5 marks)

 

  1. ii)  Deduce the semi-empirical mass formula to find binding energy of the

nucleus.                                                                                                                 (7.5marks)

 

  1. i) Describe the interaction between Nuclear magnetic moment and applied

external magnetic field.                                                                                        (7.5 marks)

 

  1. ii) Discuss the important applications of NMR Spectroscopy.        (5 marks)

 

 

 

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Loyola College B.Sc. Physics April 2012 Applied Electronics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

THIRD SEMESTER – APRIL 2012

PH 3106 – APPLIED ELECTRONICS

 

 

Date : 28-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART A

 

Answer ALL questions                                                                                             (10 x 2 = 20)

 

  1. What is meant by Fermi level?
  2. Calculate the current amplification factor α given IE = 2mA, IB = 20μA, IC = 1.98 mA.
  3. Calculate the output voltage of an inverting amplifier when Vi = 1.5V, Ri=10 kΩ, Rf=20 kΩ.
  4. State any two characteristics of an ideal OP-AMP.
  5. Show that A( + B) = A.B
  6. What is a decoder?
  7. Write a short note on T flip flop.
  8. Write a short note on mod 3 counter.
  9. What is hit ratio?
  10. What is an instruction code?

 

PART B

 

Answer any FOUR questions                                                                                              (4 x 7.5 = 30)

 

  1. (a) Discuss the formation of depletion layer in a PN junction diode (3.5)

(b) What happens to the depletion layer when the diode is forward and reverse biased?   (4)

  1. Explain the working of an inverting summing amplifier with a neat diagram.
  2. State and prove DeMorgan’s theorems.
  3. With neat diagram and truth table discuss the working of Johnson’s counter.
  4. Discuss in detail with a neat diagram a 4 input multiplexer.

 

PART C

 

Answer any FOUR questions                                                                                              (4 x 12.5 = 50)

 

  1. Describe the operation of a NPN transistor in common base mode. Obtain the input and output characteristics for the same.
  2. What is A/D conversion? Explain with a neat diagram the function of a dual slope A/D converter.
  3. Simplify using K – map F(A,B,C,D) = Σ (2,3,4,5) + (10,11,12,13,14,15). Realize the Boolean expression using NAND-NAND network.
  4. What is a ‘race around’ condition in a JK Flip flop? Explain in detail how it is solved using JK master – slave Flip flop.
  5. (a) Explain the working of a full adder using circuit diagram and truth table (7.5)

(b) Discuss in detail about computer registers     (5)

 

 

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Loyola College B.Sc. Physics April 2012 Advanced Mathematics For Physics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FOURTH SEMESTER – APRIL 2012

MT 4203/4200 – ADVANCED MATHEMATICS FOR PHYSICS

 

 

Date : 19-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

 

SECTION – A

ANSWER ALL QUESTIONS:                                                                   (10 x 2 = 20)

  1. Evaluate
  2. Define Fourier series.
  3. State the necessary and sufficient condition for the ordinary differential equation to be exact.
  4. Write the general solution when the roots are imaginary.
  5. Define Beta function.
  6. State the relation between Beta and Gamma function.
  7. If the vector is solenoidal, find .
  8. State Stokes theorem
  9. Define any two properties of cyclic group.
  10. Define Kronecker’s delta.

 

 

 

SECTION – B

ANSWER ANY FIVE QUESTIONS:                                                        (5 x 8 = 40)

  1. Solve .
  2. Find a sine series for in the range  to .
  3. Evaluate .
  4. Solve .
  5. Solve.
  6. Evaluate , where R is the region in the first quadrant bounded by the hyperbolas and  and the circles  and  .
  7. If , find and  at .
  8. Prove that the set is an abelian multiplicative finite group of order 4.

 

 

 

 

 

 

SECTION – C

ANSWER ANY TWO QUESTIONS:                                                        (2 x 20 = 40)

  1. (a) Find the Fourier series to represent in the interval .           (16+4)

 

(b) Define Half Range Fourier Series.

  1. Solve (20)

 

  1. (a) Change the order of integration in the integral and evaluate it.

(b) Solve .                                                                           (15+5)

 

  1. (a) Verify Gauss Divergence theorem for over the surface of the cube bounded by co-ordinate planes and the plane

.

(b) Prove that the Cancellation law holds good in a Group.                          (15+5)

 

 

 

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Loyola College B.Sc. Physics Nov 2012 Thermodynamics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

THIRD SEMESTER – NOVEMBER 2012

PH 3505/3503 – THERMODYNAMICS

 

 

 

Date : 05/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

PART – A

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

  1. State the law of equipartition of energy in a gas.
  2. If the density of nitrogen is 1.25g/litre at NTP, calculate the rms velocity of its molecules.
  3. Distinguish between adiabatic and isothermal changes.
  4. What is meant by superfluidity?
  5. Define intensive and extensive variables with examples.
  6. Give Clausius statement of second law of thermodynamics.
  7. Define Helmholtz and Gibbs functions.
  8. What is Joule-Kelvin effect? Give its most important application.
  9. What do you mean by micro and macro states?
  10. What do you understand by black body radiation?

 

PART – B

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

  1. (a) Define mean free path.     (2)

(b) Derive an expression for the mean free path of molecules in a gas.                              (5.5)

  1. (a) What is the principle involved in the liquefaction of gases?   (2.5)

(b) Explain Linde’s experimental method of liquefying air.                                                  (5)

  1. (a) Write down the coefficient of cubical expansion and compressibility of a gas in

terms of  partial derivatives.                                                                                    (1.5+ 1.5)

(b) Derive the expressions for coefficient of cubical expansion and compressibility

of an ideal gas.                                                                                                             (2+2.5)

  1. (a) Explain the concept of entropy.     (2.5)

(b)  Deduce the expression for the efficiency of the Carnot’s engine with suitable diagram. (5)

  1. (a) Explain the term phase-space.                                                                                         (3)

(b)     Obtain a relation connecting entropy and thermodynamic probability.                        (4.5)

 

PART – C

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

 

  1. (a) What do you understand by transport phenomena?                               (2)

(b) Derive an expression for the viscosity of a gas in terms of mean free path of its molecules.  Discuss the effect of pressure and temperature on coefficient of viscosity.            (7.5+1.5+1.5)

  1. (a) Describe, with experimental arrangement, Clement and Desormes method of determining γ,

the ratio of heat capacities.                                                                                                  (10.5)

(b) Calculate the values of the molar heat capacities of a gas if γ=1.33 and R = 8.31J/mol-K.     (2)

  1. (a) Derive Clausius –Clapeyron’s latent heat equation. (7)

(b) Establish the Clausius inequality for a cyclic process.                                                            (5.5)

  1. (a) Derive an expression for the Joule- Kelvin coefficient and show that it is zero

for an ideal gas.                                                                                                                       (7+3)

(b) Discuss temperature of inversion.                                                                                            (2.5)

  1. (a) Derive Planck’s law of radiation. (8.5)

(b) Hence deduce Wien’s law and Rayleigh – Jeans law for shorter and longer wavelengths.  (2+2)

 

 

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Loyola College B.Sc. Physics Nov 2012 Quantum Mechanics & Relativity Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

SIXTH SEMESTER – NOVEMBER 2012

PH 6609/6605/6603/6600 – QUANTUM MECHANICS & RELATIVITY

 

 

 

Date : 05/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

                                                                           PART –  A

Answer ALL the questions:                                                                                         (10×2=20 Marks)

 

  1. Define the term Work function.
  2. What is Compton wavelength? What is its value for an electron?
  3. Write down any two postulates of Quantum Mechanics.
  4. Write down the Schrodinger time dependent equation.
  5. An eigen function of the operator d2/dx2 is Ψ=e2x. Find the corresponding eigen value.
  6. Mention the properties of Hermitian operators.
  7. What are inertial and non inertial frames of reference?
  8. A man has a mass of 100Kg on the ground. When he is in a rocket in flight his mass is 101 Kg as determined by an observer on the ground. What is the speed of the rocket?
  9. What is Mach’s Principle?
  10. Find the change in frequency of a photon of red light whose original frequency is 7.3×1014  Hz, when it falls through 22.5m.

 

PART-B

Answer any FOUR questions:                                                                                          (4 x7.5=30 Marks)

 

11 a) State and explain Heisenberg’s Uncertainity Principle.                                                            (5)

  1. b) The photoelectric threshold for a metal is 3000 Å. Find the Kinetic energy

of an electron ejected from it by radiation of λ =1200 Å                                                          (2.5)

 

12 a) Determine the energy eigen values for a particle in a 1-dimesional potential well.                   (5.5)

 

  1. b) Indicate graphically the first three wave functions for such a particle.                                (2)

 

  1. Determine the expressions for the eigen values of L2  and LZ ?                                                   (7.5)

 

14) Explain the transformation of velocities and hence prove that the speed of

light is the maximum attainable speed.                                                                                        (5+2.5)

 

15)Discuss the path of the planet as predicted by the General theory of relativity.

(7.5)

 

 

PART – C

 

Answer any FOUR questions:                                                                                    (4 X12.5=50 Marks)

 

  1. a) Explain the principle and working of an Electron microscope.  (8)
  2. b) An electron has a speed of 600m/s with an accuracy of 0.005%.Calculate the

uncertainty with which we can locate the position of the electron given

h=6.6×10-34Js and m=9.1x 10-31 Kg.                                                                                         (4.5)

 

  1. Using Ehrenfest’s theorem, prove Newton’s second law of motion.                                     (12.5)

 

18.a) Formulate the Schrodinger’s equation   for a rigid rotator.                                                       (2.5)

  1. b) Solve it to find the eigen values and eigen functions of the Rigid rotator. (10)

 

  1. a) State the postulates of Special theory of relativity.                                     (2.5)
  2. b) Derive the Lorentz transformation equations.                           (10)

 

20.a) State the Principle of equivalence.                                                                                              (2.5)

  1. b) Discuss Red shift of Spectral lines in a Gravitational field.                                                (10)

 

 

 

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Loyola College B.Sc. Physics Nov 2012 Properties Of Matter & Acoustics Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS

FIRST SEMESTER – NOVEMBER 2012

PH 1503/1502/1501/1500 – PROPERTIES OF MATTER & ACOUSTICS

 

 

Date : 08/11/2012             Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

 Answer ALL questions:                                                                                               [ 10 x 2 = 20]

  1. Explain the shess – shrain graph law.
  2. State the difference between uniform and non-uniform bending.
  3. Define coefficient of viscosity of a liquid and give its dimension.
  4. How does temperature affect viscosity?
  5. How is the surface energy of a liquid related to its surface tension?
  6. Give two examples where theory of surface tension is in action.
  7. Show the standing wave pattern for the first harmonic of an open ended organ pipe diagrammatically.
  8. What is the difference between transverse and longitudinal waves? Are sound waves in air transverse or longitudinal?
  9. Give the principle of magnetostriction method of producing ultrasonics.
  10. What are the factors affecting the acoustic quality of a building?

PART – B

Answer any FOUR questions:                                                                                          [ 4 x 7.5 = 30]

  1. Compare the loads required to produce equal depressions for two beams made of the same material and having the same lengths and weight with only difference being one has circular cross section while the other has square cross section.
  2. Describe the Quinke’s method of determining the surface tension of Mercury.
  3. Write a note on (a) Rotary oil pump and (b) Mercury diffusion pump.
  4. Discuss the phenomenon of sharpness of resonance and show how it depends upon the damping factor.
  5. Derive Sabine’s formula for reverberation time.

 

PART – C

Answer any FOUR questions.                                                                                    [ 4 x 12.5 = 50]

  1. a) Derive the expression for the depression of the loaded end of a cantilever.
  2. b) Hence derive the expression for the depression of a beam subjected to non – uniform bending.

( 7+5.5 )

  1. a) Derive the expression for coefficient of viscosity by Poiseuille’s flow using method of

dimensions.

  1. b) How is the formula used to compare the coefficients of viscosity of two liquids using Ostwald

Viscometer?

( 7+5.5 )

  1. a) Explain with theory the Jaegar’s method of determining the surface tension of a liquid.
  2. b) Write a note on variation of surface tension of a liquid with temperature.

( 9+3.5 )

  1. a) What is Doppler effect?
  2. b) Derive expressions for the apparent frequency of a note when

(i) Observer is at rest and source is in motion (ii) observer is in motion and source is at rest

and (iii) observer and source are in motion.

( 2+10.5 )

  1. a) What is Piezo electric effect?
  2. b) Describe the method of producing ultrasonics using Piezo electric effect.
  3. c) List any three properties of ultrasonics.

( 2+7.5+3 )

 

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