Question

The coefficient of performance of a Carnot refrigerator working between $30^{\circ }C$ and $0^{\circ }C$ is :-

• A. $10$
• B. $1$
• C. $9$
• D. $0$

Answer 1

Answer: (C)

Coefficient of performance
$K=\frac{T_2}{T_1-T_2}=\frac{273}{303-273}=\frac{273}{30}=9$