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JEE Main 2009
Exam
JEE Main
Year
2009
Subject
Physics
Chapter
Waves and Sound

JEE Main 2009 · Physics · Waves and Sound

Three sound waves of equal amplitudes have frequencies (v-1),...

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

Options

  1. A4
  2. B3
  3. C2
  4. D1

Correct answer

C. 2

Step-by-step solution

(3)\quad(3) Maximum number of beats =v+1−(v−1)=2=v+1-(v-1)=2
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