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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)^(2)`

B

`10/9`

C

`11/10`

D

`(11/10)^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Given, `n_(s)=n/(10)`
Apparent requency n'=n `(v/(v-v_(s)))`
Where, n' = rea,l requency of source v= velocity of sound `v_(s)=` velocity of source
So, `n/n=v/(v-v/(10))=10/9`
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Knowledge Check

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