Three sound waves of equal amplitudes have frequencies \( (v-1), v(v+1) \). They superpose to gi....

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Three sound waves of equal amplitudes have frequencies \( (v-1), v(v+1) \). They superpose to
P
give beats. The number of beats produced per
W
second will be
(1) 4
(2) 3
(3) 2
(4) 1


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