Statement-1 : A Carnot engine working between `100 K` and `400 K` has an efficiency of `75%`
Statement-2 : It follows from `eta=1 - (T_(2))/(T_(1))`

Options

A. If both, Assertion and Reason are true and Reason is the correct explanation of the Asserrion.
B. If both,Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both, Assertion and Reason are false.

Answer

A

Explanation

`eta= 1-(T_(2))/(T_(1))= 1 -(100)/(400)= 3/4= 75%`
Both the statements are true and statement-2 is correct explanation of statement-1