Question

An ideal refrigerator has a freezer at temperature -12°C. The coefficient of performance of the engine is 5. The temperature of the air (to which the heat ejected) is …..

(a) 50°C 

(b) 45.2°C 

(c) 40.2°C 

(d) 37.5°C

Answer 1

Correct answer is (c) 40.2°C