The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is 
the temperature ofthe surroundings to which it rejects heat is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
The coefficient of performance of a refrigerator is
where 
and 
are the temperatures ofhot and cold reservoirs (in kelvin) respectively.
Here, 
‐20 
273 
?
5 
5 
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