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A sound wave is passing through air colu...

A sound wave is passing through air column in the form of compression and rarefaction. In consecutive compressions and rarefactions,

A

`P_c` is maximum and `P_r` is minimum.

B

`P_c` is minimum and `P_r` is maximum

C

the pressure amplitude is Bak

D

if the displacement wảve is` Y= a sin(omega t- kx),` the pressure wave at an instant is represented as `(P_c - P_r)/(2) cos (omega t - kx)` which leads displacement wave by a phase angle of `pi//2`

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The correct Answer is:
A, C, D
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