Andhra University 2005 B.Sc Physics . - Question Paper

ANDHRA UNIVERSITY
B.Sc., DEGREE exam
(Examination at the end of 1st Year)
APRIL 2005
PART II : Physics
Paper I : Mechanics, Waves & Oscillations Time:3hrs [Max: 100 Marks

part - A (4 X 15 = 60 Marks)

ans all ques.

1. (a) describe curl and div of a vector. State and prove Gauss theorem of divergence.
(OR)
(b) What do you understand by collision ? Distinguish ranging from elastic and inelastic collisions. Derive expressions for final velocities of 2 bodies after a 1 dimensional elastic collision ranging from them.

2. (a) What is a central force? Show that central force is conservative force. State Kepler’s laws of planetary motion
(OR)
(b) define the Michelson – Morley experiment and discuss the physical significance of the negative outcome.

3. (a) Distinguish ranging from damped and undamped vibrations of a harmonic oscillator. Form the formula for damped harmonic motion and find its solution.
(OR)
(b) State and discuss Fourier theorem. discuss how you analyse periodic functions using Fourier theorem.

4. (a) What is a coupled pendulum ? explain the various modes and amplitudes of single oscillator and double oscillator
(OR)
(b) find the wave velocity from the theory of transverse vibrations of strings. elaborate overtones?

part - B (5 X four = 20 Marks)

ans any 5 ques.

5. find the formula of motion for a rotating body.

6. discuss the working of a gyroscope.

7. provide a brief account of the classification of beams.

8. What is meant by Lorentz contraction? find an expression for it.

9. Derive an expression for the frequency of vibration of a spring taking its mass into consideration.

10. Write short notes on Lissajou’s figures.

11. discuss energy transport in vibrating strings.

12. How do you produce ultrasonic waves by piezoelectric effect

part - c (10 X two = 20 Marks)

ans all ques..

13. State Stoke’s theorem.

14. discuss principle of Rutherford scattering.

15. discuss sign conventions in bending beams.

16. provide 2 examples of central forces.

17. discuss time dilation.

18. discuss the principle of beats.

19. What is amplitude resonance ?

20. What is N-coupled oscillator ?

21. discuss transverse impedance.

22. provide 2 properties of ultrasonic waves

Earning:   Approval pending.