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When a sound wave is reflected from a wa...

When a sound wave is reflected from a wall, the phase difference between the reflected and incident pressure wave is :

A

frequency of the reflected wave is different to that of incident wave

B

there is a phase difference of `pi//2` is introduced to the reflected wave

C

the reflected wave is out of phase of incident wave and reach the receiving antenna along with the direct wave from transmitting antenna causing interference.

D

the waves are not reflected by the ground.

Text Solution

Verified by Experts

The correct Answer is:
C
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