JEE Main 2020PhysicsUnits and DimensionsMediumMCQ

JEE Main 2020 — Units and Dimensions Question with Solution

JEE Main 2020 (07 Jan Shift 2)

Question

Given, B is magnetic field induction, and μ0 is the magnetic permeability of vacuum. The dimension of B22μ0 is:

Choose an option

Show full solutionCorrect option: D
Correct answer
DML-1T-2

Step-by-step explanation

Energy density in magnetic filed =energyvolume=B22μ0
=Force×displacementdisplacement3=MLT-2.LL3=ML-1T-2

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About this question

This is a previous-year question from JEE Main 2020, covering the Units and Dimensions 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.