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Two sources S(1) and S(2) of sound havin...

Two sources `S_(1) and S_(2)` of sound having frequencies 338, 342 Hz are separated by a large distance. The speed of sound is 340 m/s. The velocity of the observer who is moving from `S_(2) " to " S_(1)` so that he does not hear any beats is

A

`1m//s`

B

`2m//s`

C

`3m//s`

D

`4m//s`

Text Solution

Verified by Experts

The correct Answer is:
B

`n_(1)^(1)=n_(1)[V+V_(0))/(V)]`, `n_(2)^(1)=n_(2)[(V-V_(0))/(V)]`
no beat are heard `impliesn_(1)^(1)=n_(2)^(1)`
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