AIPMT | 2015Work, Power and EnergyHard
Question
A Carnot engine, having an efficiency of 
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 :-
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 :-Options
A.99 J
B.90 J
C.1 J
D.100 J
Solution
For Engine & refrigerators operating between two same temperatures
⇒ β = 9
β =
(From the principle of refrigerator)
9 =
⇒Q2 = 90 Joule
Hence option (2)
⇒ β = 9β =
(From the principle of refrigerator)9 =
⇒Q2 = 90 JouleHence option (2)
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