A Carnot engine, having an efficiency of η = 1/10 as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is
Text Solution
Verified by ExpertsThe correct answer is:
B
For Carnot engine using as refrigerator
It is given η = 
⇒η = 1 – 
⇒ 
So, Q 2 = 90 J (as W = 10 J)
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