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As shown in the figure two sources produ...

As shown in the figure two sources producing sound Sr and Sn (velocity of sound 360 m/sec) each producing sound of frequency 200 Hz. `S_(1)` is rotating anti clock wise where as `S_n` is approaching observer O each with a speed 10 m/sec. (neglect radius of circular path of `S_1`), then calculate

Range of number of beats received by observer O at rest is (nearly)

A

0 to 11.2

B

0 to 5.7

C

1 to 4

D

0 to 7.5

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The correct Answer is:
A
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