JEE Main 2020PhysicsKinetic Theory of GasesEasyMCQ

JEE Main 2020 — Kinetic Theory of Gases Question with Solution

JEE Main 2020 (07 Jan Shift 1)

Question

Two moles of an ideal gas, with CPCV=53, are mixed with three moles of another ideal gas CPCV=43. The value of CPCV for the mixture is

Choose an option

Show full solutionCorrect option: D
Correct answer
D1.42

Step-by-step explanation

Let be the number of moles of gases and .
We have and We know

and
Also, and



Now



.

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About this question

This is a previous-year question from JEE Main 2020, covering the Kinetic Theory of Gases 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.