MHT CET202121 Sep 2021Morning ShiftPhysicsWaves and SoundActual

In fundamental mode, the time required for the sound wave to reach up to the closed end of pipe filled with air is t second. The frequency of vibration of air column is

Options

A1 t
B2 t
C3 t
D0.25 t

Correct answer

D. 0.25 t

Step-by-step solution

In fundamental mode the length of the closed tube is 4 Time required to travel a distance 4 is t . Hence time required to travel a distance will be 4 t . Time period T =4 t Frequency, n = 1 ~T = 1 4 t = 0.25 t

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