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A man runs towards a source of sound at ...

A man runs towards a source of sound at `10 ms^-1`, The frequency of the sound produced by the source is 400 Hz. If the speed of the sound be `340 ms^-1`, the relative speed of sound perceived by the man will be

A

`330 ms^-1`

B

`340 ms^-1`

C

`350 ms^-1`

D

`400 ms^-1`

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