1. What are transverse and longitudinal waves? Explain with suitable examples.

2. What is a progressive wave? What is a plane progressive harmonic wave? Establish

the displacement relation for harmonic wave travelling along the positive direction of x-

axis.

3. State and explain the principle of superposition of waves.

4. What are stationary waves? What is the necessary condition for the formation of

stationary waves?

5. Obtain an expression for a stationary wave formed by two sinusoidal waves travelling

along the same path in opposite directions and obtain the positions of nodes and

antinodes.

6. Prove analytically that in the case of an open organ pipe of length L, the frequencies of

vibrating air column are given by v= n(u/2L), where n is an integer.

7. What are beats? What is the essential condition for the formation of beats?

8. Derive an expression for the apparent frequency of the sound, when the observer

moves towards a stationary source of sound. Hence write the expression for the"

apparent frequency when the observer moves away from the stationary source.

9. Obtain an expression for the observed frequency of the sound produced by a source

when both observer and source are in motion and the medium at rest.

10. Define the term wave motion.

11 . What are mechanical waves?

12. Which types of waves do not require a material medium for their propagation?"

,

13.Amongst solids, liquids and gases, in which type of media, transverse wave motion is

possible?

14. Among solids, liquids and gases, in which type of media, longitudinal wave motion can

be transmitted?

15 How far the consecutive nodes are separated from each other?