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)

As shown in the figure two sources producing sound Sr and Sn (velocity

1.	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)
Answer» 0 to 11.2 0 to5.7 1 to 4 0 to 7.5 Answer :A

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