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NEET2016PhysicsWaves and SoundActual

Three sound waves of equal amplitudes have frequencies, ( n   –   1 ) ,   n ,   ( n   +   1 ) . They superimpose to give beats. The number of beats produced per second will be

Options

  1. A1
  2. B4
  3. C3
  4. D2

Correct answer

D. 2

Step-by-step solution

Number of beats = 2 . Maximum difference between the given frequencies.

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