The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is -20⁰C, the temperature of the surroundings to which it rejects heat is

Options

(a) 11⁰C
(b) 21⁰C
(c) 31⁰C
(d) 41⁰C

Correct Answer:

31⁰C

Explanation:

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