What is the coefficient of performance of a refrigerator? Let Q1 be the heat released to hot reservoir, Q2 be the heat extracted from a cold reservoir & W be the work done on the refrigerator.(a) Q1/W(b) Q1/Q2(c) Q2/W(d) Q2/Q1
Right answer is (c) Q2/WTo explain I would say: Coefficient of performance of a refrigerator is defined as the ratio of heat extracted from the cold reservoir to the work done on the refrigerator. It is denoted by α = Q2/W.