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A whistle producing sound waves of frequ...

A whistle producing sound waves of frequency 9500 Hz and above is approaching a stationary person with speed `v ms^-1`. The velocity of sound in air is `300 ms^-1`. If the person can hear frequencies up to 10000 Hz, the maximum value of v upto which he can hear the whistle is

A

` 16 sqrt(2) m . s^(-1)`

B

`15//sqrt(2) m . s ^(-1)`

C

` 15 m * s^(-1)`

D

`30 m * s^(-1)`

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