JEE Main 2019PhysicsElectromagnetic WavesEasyMCQ

JEE Main 2019 — Electromagnetic Waves Question with Solution

JEE Main 2019 (08 Apr Shift 1)

Question

A plane electromagnetic wave travels in free space along the x-direction. The electric field component of the wave at a particular point of space and time is E=6 V m-1 along y-direction. Its corresponding magnetic field component, B would be:

Choose an option

Show full solutionCorrect option: A
Correct answer
A 2×10-8 T  along z-direction

Step-by-step explanation

B=EC=63×108=2×10-8 T
E→×B→ is along x -direction
j^×ai^+bj^+ck^=i^
c=1
B→ is along k^
B=2×10-8 T along z -direction

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About this question

This is a previous-year question from JEE Main 2019, covering the Electromagnetic Waves 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.