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A vehicle, with a horn of frequency n is...

A vehicle, with a horn of frequency n is moving with a velocity of 30 m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency `n + n_(1)`. Then (if the sound velocity in air is 300 m/s)

A

`n_(1)=10n`

B

`n_(1)=-n`

C

`n_(1)=0`

D

`n_(1)=2n`

Text Solution

Verified by Experts

The correct Answer is:
C
As there is no approach and recession between source and observer. So observer will hear orginal frequency
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