Question

An ideal monatomic gas is taken round the cycle ABCD as shown in the figure. The work done during the cycle is:

• A. $pV$
• B. $2pV$
• C. $\frac{1}{2}pV$
• D. zero

Answer 1

The correct option is A $pV$

The work done during the cyclic process is equal to the area enclosed by the curve of the process.
Area enclosed by the rectangle = length $\times$ width
$=(2p-p)\times (2V-V)=pV$