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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 reservoir at lower temperature is

A

`90J`

B

`99J`

C

`100J`

D

`1J`

Text Solution

Verified by Experts

The correct Answer is:
A

effeciency `=W/(q_1) = 10/(q_1) = 1/10 implies q_(1) = 100J`
`implies q_(2) = q_(1) -W = 100-10=90J`.
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