JEE Main 2019 — Electromagnetic Waves Question with Solution
JEE Main 2019 (11 Jan Shift 2)
Question
A laser beam has a cross-sectional area of . The magnitude of the maximum electric field in this electromagnetic wave is given by:
[Given permittivity of space units, Speed of light
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
EM wave intensity
[where maximum electric field]
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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.