Physics · 2023
JEE Main · 30 January 2023, Shift 2 · Q2
other is labelled as Reason R Assertion A: Efficiency of a reversible heat engine will be highest at -273^° C temperature of cold reservoir. Reason…
other is labelled as Reason R
Assertion A: Efficiency of a reversible heat engine will be highest at $\displaystyle -273^{\circ} \mathrm{C}$ temperature of cold reservoir.Reason R: The efficiency of Carnot's engine depends not only on temperature of cold reservoir but it depends on the temperature of hot reservoir too and is given as $\displaystyle \eta=\left(1-\frac{T_2}{T_1}\right)$.
In the light of the above statements, choose the correct answer from the options given below
Official answer
From NTA’s final answer key for this paper.
(2)
Both $\displaystyle \mathbf{A}$ and $\displaystyle \mathbf{R}$ are true and $\displaystyle \mathbf{R}$ is the correct explanation of $\displaystyle \mathbf{A}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.