A Carnot engine operates between 227^ C and 27^ C. Efficiency of … - Vidyadip

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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