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A train is moving at 30 m/s in still air...

A train is moving at 30 m/s in still air. The frequency of the locomotive whistle is 500 Hz and the speed of sound is 345 m/s. The apparent wavelengths of sound in front of and behind the locomotive are respectively :-

A

`0.63m , 0.75 m`

B

`0.60m, 0.73m`

C

`0.65m, 0.78 m`

D

`0.60m, 0.71 m`

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The correct Answer is:
A
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