Question

$p-V$ diagram of an ideal gas is shown. The gas undergoes from initial state $A$ to final state $B$ such that initial and final volumes are same. Select the correct alternative for given process $AB$.

• A. Work done by gas is positive.
• B. Work done by gas is negative.
• C. Temperature of gas increase continuously.
• D. Process is isochoric.

Answer 1

The correct option is B Work done by gas is negative.

Volume does not remain constant throughout the process $AB$. As $T=\frac{pV}{nR}$, temperature decreases initially as both $p$ and $V$ decreases. By area under curve, net work done in negative.