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 .......... $\mathrm{J}$
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 .......... $\mathrm{J}$
- A
$100 $
- B
$99 $
- C
$90$
- D
$1$
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