JEE Main 2012 — Thermodynamics Question with Solution
JEE Main 2012 (Offline)
Question
Helium gas goes through a cycle (consisting of two isochoric and two isobaric lines) as shown in figure. Efficiency of this cycle is nearly:
(Assume the gas to be close to ideal gas)
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Work done in complete cycle Area under graph
from to , heat given to the gas
from to , heat given to the system
from to and to , heat is rejected.
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This is a previous-year question from JEE Main 2012, 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.