For rigid diatomic molecules $\begin{array}{ll}
& f=5 \
\therefore & \gamma_1=\frac{7}{5}=1.4
\end{array}Fornon−rigiddiatomicmolecules\begin{array}{ll}
& f=5+2=7 \
& \gamma_2=\frac{9}{7}=1.28 \
\therefore & \gamma_1>\gamma_2
\end{array}$
JEE Main 2025 — Physics Thermodynamics
For a diatomic gas, if γ1=(CvCp) for rigid molecules and γ2=(CvCp) for another diatomic molecules, but also having vibrational modes. Then, which one of the following options is correct ? (Cp and Cv are specific heats of the gas at constant pressure and volume)
Held on 22 Jan 2025 · Verified 6 Jul 2026.
γ2=γ1
2γ2=γ1
γ2<γ1
γ2>γ1
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