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MHT CET2019Morning ShiftPhysicsWaves and SoundActual

For formation of beats, two sound notes must have

Options

  1. ADifferent amplitudes and different frequencies
  2. BExactly equal frequencies only
  3. CExactly equal amplitudes only
  4. DNearly equal frequencies and equal amplitudes

Correct answer

D. Nearly equal frequencies and equal amplitudes

Step-by-step solution

In a sound notes various frequencies are mixed, hence beats can produced by two sound notes only when they have nearly equal frequencies and equal amplitudes.

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