Question

A Carnot engine operates between $227^{o}C$ and $27^{o}C.$ Efficiency of the engine will be

• A. $\frac{1}{3}$
• B. $\frac{2}{5}$
• C. $\frac{3}{4}$
• D. $\frac{3}{5}$

Answer 1

Answer: (B)

$\frac{2}{5}$

Answer 2

$\eta = 1 - \frac{T_{2}}{T_{1}} = 1 - \frac{300}{500} = \frac{2}{5}$