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A band playing music at a frequency v is...

A band playing music at a frequency v is moving towards a wall at a speed `v_(b)`. A motorist is following the band with a speed `v_(m)`.If v is the speed of sound, the expression for the beat frequency heard by the motorist is

A

`((v+v_(m))f)/(v+v_(0))`

B

`((v+v_(m))f)/(v-v_(0))`

C

`(2v_(0)(v+v_(m))f)/(v^(2)-v_(0)^(2))`

D

`(2v_(m)(v+v_(b))f)/(v^(2)-v_(b)^(2))`

Text Solution

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The correct Answer is:
C
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