JEE Main 2015 — Electromagnetic Waves Question with Solution
From: JEE Main 2015 (Online) 10th April Morning Slot
Question
An electromagnetic wave travelling in the x-direction has frequency of 23 1014 Hz and electric field amplitude of 27 Vm1. From the options given below, which one describes the magnetic field for this wave ?
Choose an option
Show full solutionCorrect option: B
Correct answer
B (x, t) = (9 108T)
sin [ 2 (1.5 106x 2 1014t)]
sin [ 2 (1.5 106x 2 1014t)]
Step-by-step explanation
We know that
Since wave direction (x-axis)
Since wave direction (x-axis)
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This is a previous-year question from JEE Main 2015, 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.