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JEE Main20254 Apr 2025Morning ShiftPhysicsWaves and SoundActual

Consider the sound wave travelling in ideal gases of He , CH ₄ , and CO ₂ . All the gases have the same ratio P , where P is the pressure and is the density. The ratio of the speed of sound through the gases v _ He : v _ CH ₄ : v _ CO ₂ is given by

Options

  1. A7 5 : 5 3 : 4 3
  2. B5 3 : 4 3 : 7 5
  3. C5 3 : 4 3 : 4 3
  4. D4 3 : 5 3 : 7 5

Correct answer

C. 5 3 : 4 3 : 4 3

Step-by-step solution

aligned & v _ sound = p & =1+ 2 f & _ He = 5 3 & . _ CH ₄ = _ CO ₂ 1.33= 4 3 (Experimental data ) aligned

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