MCQ
A Carnot engine operates between $227^{\circ} \mathrm{C}$ and $27^{\circ} \mathrm{C}$. Efficiency of the engine will be
- A$\frac{1}{3}$
- ✓$\frac{2}{5}$
- C$\frac{3}{4}$
- D$\frac{3}{5}$
✓
Answer
Correct option: B.
$\frac{2}{5}$
(b) $\quad \eta=1-\frac{T_2}{T_1}=1-\frac{300}{500}=\frac{2}{5}$
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