Physics · 2020
JEE Main · 8 January 2020, Shift 2 · Q7
A Carnot engine having an efficiency of 1/10 is being used as a refrigerator. If the work done on the refrigerator is 10 J, the amount of heat…
A Carnot engine having an efficiency of $\displaystyle \frac{1}{10}$ is being used as a refrigerator. If the work done on the refrigerator is $\displaystyle 10$ J, the amount of heat absorbed from the reservoir at lower temperature is :
Official answer
(3)
$\displaystyle 90$ J
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.