JEE Main 2020 — Electromagnetic Waves Question with Solution
From: JEE Main 2020 (Online) 2nd September Evening Slot
Question
In a plane electromagnetic wave, the directions
of electric field and magnetic field are
represented by and , respectively.
What is the unit vector along direction of
propagation of the wave?
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
=
=
Unit vector along =
=
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Electromagnetic Waves chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2020, 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.