12-07-2013, 03:32 PM
I PUC – PHYSICS QUESTION PAPER
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One Mark questions.
1. What is a wave?
2. What is a progressive wave?
3. Does, all the waves requires a material medium for their propogation?
4. Does, a wave carry energy?
5. Name the properties of a medium which are responsible for the propogation of a
mechanical wave?
6. What are matter waves?
7. Name the kind of wave that are employed in the working of an electron microscope?
8. Define amplitude of a wave.
9. Define period of a wave.
10. Define frequency of a wave.
11. Define wavelength of a wave.
12. Define wave velocity.
13. Define phase of a vibrating particle?
14. Define propogation constant (or) angular wave number.
15. How is propogation constant related to wavelength of a wave?
16. Name the factors which determine the speed of a propogation of an electromagnetic
wave?
17. Name the quantity associated with a wave that remains unchanged when a wave
travel from one medium to another?
18. Name the quantities associated with a wave, that changes when a wave travels from
one medium to another.
19. What is sound?
20. How is sound produced?
21. Why do we see the flash of lightening before we hear the thunder?
22. What is a stationary wave?
23. How much energy is transported by a stationary wave?
24. What is a node?
25. What is an antinode?
26. What is a segment (or) loop in a stationary wave?
27. What is the length of a loop in a stationary wave in terms of wavelength?
28. How much is the distance between a node and its neighbouring antinode?
29. How much is the distance between a node and its neighbouring node.
30. What happens to a wave, if it meets a rigid boundary?
Two Mark questions:
1. What are mechanical waves? Give two examples.
2. What are non-mechanical waves? Give two examples.
3. What are longitudinal waves? Give two examples
4. What are Transverse waves? Give two examples.
5. Obtain the relation connecting v, u and l where symbols have their usual meaning.
6. Calculate the period of a wave of wavelength 0.005 m which travels with a speed of
50 cm.s-1.
7. The frequency of a tuning fork is 256 Hz and sound travels a distance of 25m while
the fork executes 20 vibrations. Calculate the wavelength and velocity of the sound
wave.
8. Velocity of sound in air is 340 ms-1. Two sound waves of frequency 1 KHz each
interfere to produce stationary wave. What is the distance between two successive
nodes?
4 and 5 marks questions :
1. Give the differences between progressive and stationary waves.
2. Give the differences between mechanical and a non mechanical (electromagnetic)
waves.
3. Give the differences between longitudinal and transverse waves.
4. Write Newton’s formula for speed of sound in a gas. Discuss Laplace correction &
arrive at the formula modified by him.
5. Mention the characteristics of a progressive mechanical wave.
6. Mention the characteristics of a stationary wave.
7. What are beats? Give the theory of beats.
8. What is Doppler effect? Derive an expression for the apparent frequency when a
source moves towards a stationary listener.