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

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

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. Mathematics April 2008 Physics For Mathematics – II Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

# FG 15

FOURTH SEMESTER – APRIL 2008

# PH 4206 / 4200 – PHYSICS FOR MATHEMATICS – II

Date : 24/04/2008                Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART – A

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

1. Convert the given decimal into binary number 56.25310=X2
2. State Demorgan’s law.
3. State Pauli’s exclusion principle.
4. Define Photoelectric effect.
5. What is meant by Binding energy?
6. Define Nuclear Fission.
7. Does the sound waves travel through vacuum? Give reason.
8. Define the term acoustics and ultrasonic waves.
9. Define a perfectly Black body.

10.State De-Broglie’s wavelength.

# PART-B

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

11.Reduce the following Boolean function with the help of a karnaugh map

F=S(1,2,3,5,7,8,9,10,11,12,14).

12.Describe the production of X-rays with a neat diagram.

13.Discuss the similarities between an atomic nucleus and a liquid drop.

14.Derive Newton’s formula for velocity of sound in a medium.

15.Why the classical theory fails? Give reasons.

### PART-C

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

16.Draw a neat circuit diagram of JK flip-flop and explain it’s working with Truth table.

1. Describe in detail, the Continuous and Characteristic X-ray spectra

18.Discuss the general properties of a nuclei and explain the

Binding energy/nucleon versus A curve.

19.State Reverberation time. Derive Sabine’s formula for it.

20.Derive Schrodinger’s time dependent and time independent wave equations.

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