JEE Main 2019 — Electromagnetic Waves Question with Solution
From: JEE Main 2019 (Online) 9th January Morning Slot
Question
A plane electromagnetic wave of frequency 50 MHz travels in free space along the positive x-direction. At a particular point in space and time, The corresponding magnetic field at that point will be :
Choose an option
Show full solutionCorrect option: B
Correct answer
B2.1 108 T
Step-by-step explanation
Given,
T
Now we have to find the direction of .
We know, and given is in y-direction and wave moving in positive x-direction.
T
Now we have to find the direction of .
We know, and given is in y-direction and wave moving in positive x-direction.
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 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.