What is a longitudinal wave ?

Explain how sound is propagated as a longitudinal wave .

What is the distance between a compression and its nearest rarefaction in a longitudinal wave?

Do displacement, particle velocity and pressure variation in a longitudinal wave vary with the same phase?

Can we conclude from the interference phenomenon whether light is a transverse wave or a longitudinal wave?

Why is sound wave called a longitudinal wave ?

In a stationary longitudinal wave, nodes are points of

(A): The longitudinal waves are called pressure waves. (R): Propagation of longitudinal waves through a medium involves changes in pressure and volume of medium, when compression and rarefaction are formed.

(A): Solids can support both longitudinal and transverse waves but only mechanical longitudinal waves can propagate in gases. (R): For the propagation of mechanical transverse waves, medium must also necessarily have the property of rigidity.

(a) Obtain the relation connecting particle velocity and wave velocity. (b) What is wavefunction? What is its significance ? (c) When a longitudinal wave passes through a medium (liquid or gas) write down the expression for the pressure amplitude of the wave.

Draw the pressure-distance graph of a longitudinal wave. Compare it with the displacement-graph. What can you conclude from the graph ?