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BITSAT2010PhysicsWaves and SoundActual

A source of sound produces waves of wavelength 60 ~cm when it is stationary. If the speed of sound in air is 320 ~m ~s ⁻¹ and source moves with speed 20 ~m ~s ⁻¹, the wavelength of sound in the forward direction will be nearest to

Options

  1. A56 ~cm
  2. B60 ~cm
  3. C64 ~cm
  4. D68 ~cm

Correct answer

A. 56 ~cm

Step-by-step solution

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