#### 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 Option 1) 100 J Option 2) 99 J Option 3) 90 J Option 4) 1 J

As we learnt in

Coefficient of performance (β) -

- wherein

For a perfect refrigerator

Coefficient of performance of refrigerator

Option 1)

100 J

This option is incorrect.

Option 2)

99 J

This option is incorrect.

Option 3)

90 J

This option is correct.

Option 4)

1 J

This option is incorrect.