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MHT CET202014 Oct 2020Evening ShiftPhysicsWaves and SoundActual

In fundamental mode, the time required for the sound wave to reach upto the closed end of a pipe filled with air is 't' second. The frequency of vibration of air column is

Options

  1. A1 3 t
  2. B1 t
  3. C1 4 t
  4. D1 2 t

Correct answer

C. 1 4 t

Step-by-step solution

The distance between the open end and the closed end in the fundamental mode is 4 . If the time required to cover the distance is t , then the time required to travel distance equal to will be 4 t . Therefore the period of the wave is 4 t . Hence the frequency is 1 4 t .

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