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MHT CET202314 May 2023Evening ShiftPhysicsWaves and SoundActual

Sound waves of frequency 600 ~Hz fall normally on a perfectly reflecting wall. The shortest distance from the wall at which all particles will have maximum amplitude of vibration is (speed of sound =300 ~ms ⁻¹ )

Options

  1. A1 4 ~m
  2. B1 8 ~m
  3. C3 8 ~m
  4. D7 8 ~m

Correct answer

B. 1 8 ~m

Step-by-step solution

The maximum displacement of the wave will occur at antinode of the wave. The first antinode will be a point where, d = 4 The wavelength is given by, = v f = 300 600 So, d= 0.5 4 = 1 8 m

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