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The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is – 20°C,

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The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is – 20°C, the temperature of the surroundings to which it rejects heat is ……

(a) 21°C 

(b) 31°C 

(c) 41°C 

(d) 11°C

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Correct answer is (b) 31°C

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