Question

Explain the mechanism of formation of longitude wave when source vibrates in air

Answer 1

Consider the example of spring..When it is moved back and forth it produces regions of compressions and rarefactions in it..and the wave starts travelling from one end towards the other end..in doing so they produce compressions,move forward thus leaving behind rarefactions and so on..
So,wave moves along the direction of medium known as longitudinal wave..

Answer 2

Heya...!

A wave motion in which particle of the medium vibrate about their mean position along the direction of propagation of the wave is called Longitudnal wave motion

For eg). --» Sound wave in air(340m/s)

When a Longitudnal wave travels in a medium then the particles of medium vibrates back and forth in same direction

You can see the diagram of longitudnal wave in form of compression and rarefaction

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