JEE Main 2020PhysicsWork Power EnergyMediumMCQ

JEE Main 2020 — Work Power Energy Question with Solution

JEE Main 2020 (06 Sep Shift 1)

Question

If the potential energy between two molecules is given by U=Ar6+Br12, then at equilibrium, separation between molecules, and the potential energy are:

Choose an option

Show full solutionCorrect option: C
Correct answer
C2BA1/6,A24B

Step-by-step explanation

U=Ar6+Br12

f=-dUdr

For equilibrium

f=0

so r=2BA16

Then, U=A24B

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About this question

This is a previous-year question from JEE Main 2020, covering the Work Power Energy 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.