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Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\). Assertion …

Q1

Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\).
Assertion A: Efficiency of a reversible heat engine will be highest at \(-273^{\circ} C\) temperature of cold reservoir.
Reason R: The efficiency of a Carnot's engine depends not only on the temperature of cold reservoir but it depends on the temperature of hot reservoir too and is given as \(\eta=\left(1-\frac{T_2}{T_1}\right)\).
In the light of the above statements, choose the correct answer from the options given below:

[JEE Main 2023, 30 Jan (Shift 2)]

a

\(A\) is true but \(R\) is false

b

Both \(A\) and \(R\) are true but \(R\) is not the correct explanation of \(A\)

c

\(A\) is false but \(R\) is true

d

Both \(A\) and \(R\) are true and \(R\) is the correct explanation of A

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