The ratio of the molar heat capacities of a diatomic gas at constant pressure to that at constant volume is

Options

A. `(7)/(2)`
B. `(3)/(2)`
C. `(3)/(5)`
D. `(7)/(5)`

Answer

D

Explanation

`C_(V) = (5)/(2)R and C_(P) = (7)/(2)R`
`therefore" "gamma = (C_(P))/(C_(V)) = (7)/(5)`