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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

`2070 Hz`

B

`2000 Hz`

C

`3000 Hz`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`v' = ((v-v_(0))/(v+v_(s)))v`
`1950Hz = ((340-10)/(340+10))v`
`:. v = 2070 Hz`
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