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A sound source is moving towards a stat...

A sound source is moving towards a stationary observer with 1/10 of the speed of sound. The ratio of apparent to real frequency is

A

`(9)/(10)`

B

`(10)/(9)`

C

`((10)/(11))^(2)`

D

`((9)/(10))^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`n_(1) = ((V)/(V - V_(S))) n = [(V)/((9//10)^(V))]n`
`:. (n_(1))/(n) = (10)/(9)`
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