A heat engine employing a Carnot cycle with an efficiency of η = 10% is used as a refrigerating machine, the thermal reservoirs being the same. The refrigerating efficiency 
is
A
12
B
8
C
D
9
Text Solution
Verified by ExpertsThe correct answer is:
D
Used as a refrigerator, the refrigerating efficiency of a heat engine is given by 
here where 
is the efficiency of the heat engine.
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