An ideal mono-atomic gas follows the path `ABDC`. The work done during the complete cycle is

Options

A. `-PV`
B. `-2PV`
C. `-1//2 PV`
D. zero

Answer

A

Explanation

Net work done during a complete cycle is equal to area under the cycle. `(-ve` if cycle is clockwise, i.e. work done by the gas and `+ve` when cycle is anticlockwise, i.e., work done on the gas)