Question

Graph of specific heat at constant volume for a monatomic gas is

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

For an ideal gas, the specific heat at constant volume is given by,
$C_v=\frac{f}{2}R$ ; where $f$ is the degree of freedom of gas and $R$ is gas constant.

For, monoatomic gas, only $3$ translational degrees of freedom exist in the $3$ directions. There is no rotational degree of freedom exists in monoatomic gas.Therefore,
$C_v=\frac{3}{2}R$ .
So the correct graph is,