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Olympiad workbookNSEPWaves and Sound

A man stands at rest in front of a large wall. A sound source of frequency 400 Hz is placed between him and the wall. The source is now moved towards the wall at a speed of 1 ~m / s . The number of beats heard per second will be (speed of sound in air is 345 ~m / s )

Options

  1. A0.8
  2. B0.58
  3. C1.16
  4. D2.32

Correct answer

C. 1.16

Step-by-step solution

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