Physics · 2022
JEE Main · 27 July 2022, Shift 2 · Q38
In 1^st case, Carnot engine operates between temperatures 300 K and 100 K. In 2^nd case, as shown in the figure, a combination of two engines is…
In $\displaystyle 1^{\text {st }}$ case, Carnot engine operates between temperatures $\displaystyle 300$ K and $\displaystyle 100$ K. In $\displaystyle 2^{\text {nd }}$ case, as shown in the figure, a combination of two engines is used. The efficiency of this combination (in $\displaystyle 2^{\text {nd }}$ case) will be :
Official answer
(1)
same as the $\displaystyle 1^{\text {st }}$ case.
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.