(d) $T_{2} = 150 + 273 = 423$ K, $T_{1} = 25 + 273 = 298$ K $Q = 500$ K $\frac{W}{Q} = \frac{T_{2} - T_{1}}{T_{2}}$ $\therefore W = 500\ \left( \frac{423 - 298}{423} \right) = 147.7\ J$
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.