Three sound waves of equal amplitudes have frequencies , They superpose to give beats. The number of beats produced per second will be
As we learnt in
Beat Frequency -
module of
- wherein
Where are frequency of two wave differ slightly in value of frequency.
Beat frequency in this case is equal to difference of maximum frequency and minimum frequency.
Hence, beat frequency =
Correct option is 3.
Option 1)
This is an incorrect option.
Option 2)
This is an incorrect option.
Option 3)
This is the correct option.
Option 4)
This is an incorrect option.
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