JEE Main 2021 — Electromagnetic Waves Question with Solution
From: JEE Main 2021 (Online) 26th February Morning Shift
Question
A radiation is emitted by 1000W bulb and it generates an electric field and magnetic field at P, placed at a distance of 2m. The efficiency of the bulb is 1.25%. The value of peak electric field at P is x 101 V/m. Value of x is ___________. (Rounded off to the nearest integer) [Take C2N1 m2, c = ms1]
Enter your answer
Show full solutionCorrect answer: 13.69
Correct answer
13.69
Step-by-step explanation
Intensity of electro magnetic wave is,
v/m
v/m
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This is a previous-year question from JEE Main 2021, 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.