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ExamsNEETPhysics

The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively. If γ = Cp / Cv and R is the universal gas constant, then Cv is equal to

  1. R / (γ - 1)
  2. (γ - 1) / R
  3. γR
  4. (1 + γ) / (1 - γ)

Correct answer: R / (γ - 1)

Solution

The relationship between Cp, Cv, and γ for an ideal gas is given by Cp - Cv = R and γ = Cp / Cv. Rearranging these equations, Cv = R / (γ - 1).

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