1. Distinguish between transverse and longitudinal waves.

2. What is the phase difference between the incident and reflected waves when the wave is reflected by a rigid boundary?

3. What is a stationary or standing wave?

4. What do you understand by the terms node and anti node?

5. If the air column in a tube open at both ends, is set in vibration. What harmonics are possible?

6. What is the phase difference between incident and reflected waves at

(a) an open end (b) closed end.

7. Name any two musical instruments whose working depends on transverse

vibrations of a string?

8. What happends to the fundamental frequency of a stretched string when its

linear density becomes 1/4 th of its initial value?

9. What is the ratio of frequency of fourth overtone to the fundamental frequency

of a stretched string?

10. What is the "end correction" in resonating air column?

11. What is the ratio of the frequencies of harmonics in air column of some length in a (i) closed pipe (ii) an open pipe?

12. Mention any two applications of beats.

13. What is the Newton's formula for velocity of sound in a gas? How is it

corrected by Laplace?

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