Refrigerators

2015 AIPMT-II 1 question

1. 1 Thermodynamics
   The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is $-20^\circ C$, the temperature of the surroundings to which it rejects heat is:
   A $21^\circ C$ B $31^\circ C$ C $41^\circ C$ D $11^\circ C$
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