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An engine is moving on a circular path of radius 100 m with a speed of 20 m/s. What will be frequency noted by an observer standing stationary at the centre of the circular path when the engine blows a whistle of frequency 500 Hz ?

A

more than 500 Hz

B

less than 500 Hz

C

500 Hz

D

no sound

Text Solution

Verified by Experts

The correct Answer is:
C
`n = 500 Hz`
Since, Doppler's effect is not applicable for circular motion. since, there is no relative motion between source and observer
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