The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called

The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called Correct Answer Coefficient of performance of refrigeration

The efficiency of a refrigerator or heat pump is given by a parameter called the coefficient of performance (C.O.P.).
The C.O.P. of a refrigerator is given by the following equation:
$$\eqalign{ & {\text{C}}{\text{.O}}{\text{.P}}{\text{.}} = \frac{{{\text{Desired Output}}}}{{{\text{Required Input}}}} \cr & = \frac{{{\text{Cooling Effect}}}}{{{\text{Work Input}}}} \cr & = \frac{{{\text{QL}}}}{{\text{W}}} \cr} $$
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