Home » Thermal Physics » Kinetic Theory » Question
  1. 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 Option: A

Cp – Cv = R ⇒ Cp = Cv + R

∵ γ =
Cp
=
Cv + R
Cv
+
R
CvCvCvCv

⇒ γ = 1 +
R
R
= γ - 1
CvCv

⇒ Cv =
R
&gamm; - 1



Your comments will be displayed only after manual approval.