JEE Main & Advanced
Physics
Wave Mechanics
Question Bank
Self Evaluation Test - Waves
question_answer
Three sound waves of equal amplitudes have frequencies \[(v-1),\text{ }v,\text{ }(v+1).\] They superpose to give beats. The number of beats produced per second will be:
A) 3
B) 2
C)1
D)4
Correct Answer:
B
Solution :
[b] Maximum number of beats \[=\,\,\,\,\,(v+1)-(v-1)=2\]