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Assertion (A): Statement- 1 is true, statement- 2 is true ; statement-2 is correct explanation of statement- 1 . Statement-1 is true ; statement-2 is true but statement-2 is not a correct explanation of statement-1.

Statement-1 is true, but statement=2 is not true. Statement- 1 is false, but statement- 2 is true.
Statement-1. A Carnot engine working between \( 100 \mathrm{~K} \) and \( 400 \mathrm{~K} \) has an efficiency of \( 75 \% \).
Reason (R): Statement- 1 is true, statement- 2 is true ; statement-2 is correct explanation of statement-1.
Statement-1 is true : statement-2 is true but statement-2 is not a correct explanation of statement-1.

Statement 1 is true, but statement- 2 is not true. Statement-1 is false, but statement-2 is true.
Statement-2. It follows from \( \eta=1-\frac{T_{2}}{T_{1}} \)
(a) \( \mathrm{A} \)
(b) B
(c) \( \mathrm{C} \)
(d) \( \mathrm{D} \)
Statement-1. A Carnot engine working between \( 100 \mathrm{~K} \) and \( 400 \mathrm{~K} \) has an efficiency of \( 75 \% \).
Statement-2. It follows from \( \eta=1-\frac{T_{2}}{T_{1}} \)
(a) \( \mathrm{A} \)
(b) \( \mathrm{B} \)
(c) \( \mathrm{C} \)
(d) \( \mathrm{D} \)
(A) Both A and R are true and R is the correct explanation of A.br(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(E) Both A and R are false.
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