Q. The ratio of the molar heat capacities of a diatomic gas at constant pressure to that at constant volume is
A) $\frac{7}{2}$
B) $\frac{3}{2}$
C) $\frac{3}{5}$
D) $\frac{7}{5}$
Explanation
(d) $C_{V} = \frac{5}{2}R\ \ and\ \ C_{p} = \frac{7}{2}R$
$\therefore\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \gamma = \frac{C_{p}}{C_{V}} = \frac{7}{5}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.