Two whistles A and B produces notes of frequencies 660 Hz and 596 Hz respectively. There is a listener at the mid-point of the line joining them. Now the whistle B and the listener start moving with speed 30 m/s away from the whistle A. If speed of sound be 330 m/s, how many beats will be heard by the listener
Text Solution
Verified by ExpertsThe correct answer is:
B
For observer note of 
will not change due to zero relative motion.
Observed frequency of sound produced by A
No. of beats = 600 – 596 = 4
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