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MHT CET202411 May 2024Evening ShiftPhysicsWaves and SoundActual

The ratio of the velocity of sound in hydrogen gas ( = 7 5 ) to that in helium gas ( = 5 3 ) at the same temperature is

Options

  1. A1: 1
  2. B7 ; 3
  3. C21: 25
  4. D42 : 5

Correct answer

D. 42 : 5

Step-by-step solution

Formula: v_H v_ H e = _H M_ H e _ H e M_H . Given: - _H= 7 5 , _ H e = 5 3 , - M_H=2, M_ H e =4 . Substitute values: v_H v_ H e = 7 5 4 5 3 2 = 28 10 3 5 = 84 50 = 42 5 . Answer: 42 5 , Option 4.

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