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Two identical speakers emit sound waves ...

Two identical speakers emit sound waves of frequency 660Hz uniformly in all directions. The audio output of each speaker is 1mW and the speed of sound in air. A point P is a distance 2m from one speaker and 3m from the other. If they are driven coherently but out of phase by `180^@` , the intensity at the point 'P' is

A

`55.3 muW//m^2`

B

`2.2 muW//m^2 `

C

`28.7 mu W//m^2`

D

`28.7 mu W//m^2`

Text Solution

Verified by Experts

The correct Answer is:
B
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