Home Physics Thermodynamics JEE Main 2021 A heat engine has an efficiency of . When t…
Physics Thermodynamics JEE Main 2021 MCQ (Single Correct)

A heat engine has an efficiency of . When the temperature of sink is reduced by , its efficiency get doubled. The temperature of the source is:

A
124 0 C
B
37 0 C
C
62 0 C
D
99 0 C

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Text Solution

Verified by Experts
The correct answer is:
D

….(i)

In => 372 − 273 = 99 C

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