NEET | 2017Work, Power and EnergyHard

Question

A carnot engine having an efficiency of 110as 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.

90 J

B.

99 J

C.

100 J

D.

1 J

Solution

β=Q2W=1-ηη
⇒ Q29=1-0.10.1
⇒Q2 = 2 ×10 = 90 J

 

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