JEE Main 2019 — Thermodynamics Question with Solution
JEE Main 2019 (12 Apr Shift 2)
Question
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,
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
….(1)
….(2)
From equation (1) and (2)
And
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This is a previous-year question from JEE Main 2019, covering the Thermodynamics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.