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A whistle producing sound waves of frequ...

A whistle producing sound waves of frequencies `9500 Hz` and above is approaching a stationary person with speed `vms^(-1)`. The velocity of sound in air is `300 ms^(-1)`. If the person can hear frequencies upto a maximum of `10,000 Hz`.The maximum value of `v` upto which he can hear whistle is

A

`"30 ms"^(-1)`

B

`15sqrt2ms^(-1)`

C

`(15)/(sqrt2)ms^(-1)`

D

`15ms^(-1)`

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The correct Answer is:
D
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