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+1 vote
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in Physics by (69.1k points)

Two sources of sound S1 and S2 produce sound waves of same frequency 660 Hz. A listener is moving from source S1 towards S2 with a constant speed u m/s and he hears 10 beats/s. The velocity of sound is 330 m/s. Then, u equals :

(1) 10.0 m/s  (2) 5.5 m/s  (3) 15.0 m/s  (4) 2.5 m/s 

1 Answer

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Best answer

Correct option  (4) 2.5 m/s

Explanation:

As observer goes away from source S1 so apparent frequency

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