Question

A Carnot engine operates with an efficiency equals to $\frac{1}{5}$. On decreasing the temperature of the sink by 50 K, the efficiency increases to $\frac{1}{3}$. Temperatures of source and sink are respectively :

• A. 300 K, 500 K
• B. 500 K, 300 K
• C. 375 K, 300 K
• D. 300 K, 375 K

Answer 1

The correct option is C 375 K, 300 K