P-V Diagrams & Cyclic Processes question from JEE Main 2024 (5 Apr, Shift 1)

Answer: (a)

1. For a cycle $\Delta U = 0$, so heat absorbed = work = area enclosed.
2. The circle spans 60 to 340 on both axes, so each semi-axis is 140 units: $140$ kPa and $140$ cc.
3. Area $= \pi (140 \times 10^{3})(140 \times 10^{-6}) = 19.6\pi \approx 61.6$ J
4. So the answer is (a) 61.6 J.