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A long itudinal sine wave is travelling ...

A long itudinal sine wave is travelling in air along positive x-direction. Displacement(s) of particles from their mean positions at a particular time t are shown in the figure. Choose the correct options for that instant only

A

Particle located at C has zero velocity .

B

Particle located at C is equal to normal atmospheric direction

C

The pressure at C is equal to normal atmospheric pressure .

D

Particles located near B are under compression.

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The correct Answer is:
A, B, C, D
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