JEE Main 2022 · 26 Jul · Shift 2 · Physics Q42

PhysicsSingle correct+4 / -1Question 42 of 90

A gas has $n$ degrees of freedom. The ratio of specific heat of gas at constant volume to the specific heat of gas at constant pressure will be :

\dfrac n{n+2}

\dfrac{n+2}n

\dfrac n{2n+2}

\dfrac n{n-2}

Answer and worked solution

Official answer: A

$\gamma=1+\frac2n$ , so $\frac{C_V}{C_P}=\frac1\gamma=\frac n{n+2}$ .

(A)

JEE Main 2022 · 26 Jul · Shift 2, Physics question 42