Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A Carnot engine has an efficiency of 
. When the temperature of the sink is reduced by 
, its efficiency is doubled. The temperatures of the source and the sink are, respectively
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Efficiency of Carnot engine 
Given,
Also,
Also, 
(Note: Temperature of source is more than temperature of sink)
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