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A carnot engine, having an efficiency of...

A carnot engine, having an efficiency of `eta=1//10` as heat engine, is used as a refrigerator. If the work done on the system is `10J`, the amount of energy absorbed from the reservior at lower temperature is

A

90J

B

99J

C

100J

D

1J

Text Solution

Verified by Experts

The correct Answer is:
A
`beta=Q_(1)/W=(1-eta)/(eta)`
`Q_(2)/(10)=(1-0.1)/(0.1) rArr Q_(2)="90 Joule"`
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