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Question 31038
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Kinetic Theory and Thermodynamics: Adiabatic Process MCQ

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Adiabatic ProcessHardQuestion 31038

Question

Speed of sound in gas is given by √(γP/ρ) rather than √(P/ρ) because sound propagation is:
  1. A
    Isothermal
  2. B
    Isobaric
  3. C
    Adiabatic
    Correct
  4. D
    Isochoric

Correct answer

Adiabatic

Explanation

Sound waves alternate compression/rarefaction so fast that no heat exchange occurs — they are adiabatic. Newton's isothermal formula underestimates by factor √γ.

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