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A source of sound of frequency 256Hz is ...

A source of sound of frequency `256Hz` is moving rapidly towards wall with a velocity of `5m//sec`. How many beats per second will be heard if sound travels at a speed of `330m//sec`.

A

7.8 Hz

B

7.7 Hz

C

3.9 Hz

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
D
Number of beats heard per second = 0
Because there is no relative motion between source and observer.
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