Three sound waves of equal amplitudes have frequencies (v - 1), v, (v + 1). They superimpose to produce beats. The number of beats produced per second will be:
A)\[\nu \]
B)\[\frac{\nu }{2}\]
C)2v
D)1
Correct Answer:
C
Solution :
maximum number of beats\[=v+1-\left( v-1 \right)\]\[=2\]