A) Beats are due to destructive interference
B) Maximum beat frequency audible to a human being is 20
C) Beats are as a result of Doppler?s effect
D) Beats are due to superposition of two waves of nearly equal frequencies
Correct Answer: D
Solution :
Beats are the periodic and repeating fluctuation heard in the intensity of sound when two sound waves of very similar frequencies interfere with one another.
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