A whistle producing sound waves of frequencies 9500 Hz and 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 upto a maximum of 10,000 Hz. The maximum value of v upto which he can hear the whistle is

Options

A. `30 ms^(-1)`
B. `15sqrt(2) ms^(-1)`
C. `15sqrt(2) ms^(-1)`
D. `15 ms^(-1)`

Answer

D