`C_(p)` is always greater than `C_(V)` due to the fact that:-

Options

A. No work is being done on heating the gas at constant volume .
B. When a gas absorbs heat at constant pressure its volume must change so as to do some external work.
C. The internal energy is a functionof temperature only for an ideal gas.
D. For the same rise of temperature ,the internal energy of a gas changes by a smaller amount at constant volume than at constant pressure.

Answer

A, B

Explanation

At constant volume, work done by gas it zero.