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Two stationary soruces of sound, S(1) an...

Two stationary soruces of sound, `S_(1)` and `S_(2)` having an equal frequency are fixed some distance apart. The position A is left of `S_(1)` , position B in the middle of the two sources and positionC is to the right of `S_(2)`. An observer starts moving with velocity `V_(0)` from position A towards `S_(1)`, then

A

beats for three position A, B and C will be heard

B

beats will be heard from A and C but not in case of B

C

beats will be not heard for A and C but will be heard for B

D

beats will be not heard for three position of A, B and C

Text Solution

Verified by Experts

The correct Answer is:
C
At point, A and C two sounds are approaching from both the two sources and the listener is either moving towards sources or going away from sources.
But at point B cases are not same as mentioned in the previous condition at point A or C, hence beat is produced as the listener is moving away from `S_(1)` and approaching towards `S_(2)`
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