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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

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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. 100J
B. 99 J
C. 90 J
D. 1 J
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Correct Answer - C
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