Question

The efficiency of a Carnot engine working between $\text{800 K}$ and $\text{500 K}$ is -

• A. $0.\text{4}$
• B. $0.\text{625}$
• C. $\text{0}\text{.375}$
• D. $0.\text{5}$

Answer 1

Answer: (C)

Efficiency, $\eta =1-\frac{T_2}{T_1}=1-\frac{500}{800}$
$=\frac{3}{8}=0.375$