NEET 2021 Model Test Paper 6
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Question : 15 of 180
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Two whistles A and B produce notes of frequencies 660 Hz and 596 Hz respectively.
There is a listener at the mid-point of the line joining them. Both the whistle B and the listener start moving with speed 30 m/s away from whistle A. If speed of sound be 330 m/s, how many beats will be heard by the listener ?
There is a listener at the mid-point of the line joining them. Both the whistle B and the listener start moving with speed 30 m/s away from whistle A. If speed of sound be 330 m/s, how many beats will be heard by the listener ?
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