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The coefficient of performance of a refrigerator is 5. If the inside temperature of freezer is -20C, then the temperature of the surroundings to

The coefficient of performance of a refrigerator is 5. If the inside temperature of freezer is -20C, then the temperature of the surroundings to which it rejects heat is (a) 41C (c) 21C (b) 11C (d) 31C

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