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A source and a detector moveaway fro eac...

A source and a detector moveaway fro each other, each with a speed of `10 ms^-1` with respect to the grond with no wind. If the detector detects a frequency 1950 Hz of the sound coming from thesorce, what is the original frequency of the source? Speed of sound in air `=340 ms^-1`.

A

`1950 Hz`

B

`2068 Hz`

C

`2132 Hz`

D

`2586 Hz`

Text Solution

Verified by Experts

The correct Answer is:
B
`n'=h((v-v_O)/(v+v_S))=n((340-10)/(340+10))=1950`
`rArr n=2068Hz`.
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