JEE Main 2019 — Electromagnetic Waves Question with Solution
From: JEE Main 2019 (Online) 12th January Morning Slot
Question
A light wave is incident normally on a glass slab of refractive index 1.5. If 4 % of light gets reflected and the amplitude of the electric field of the incident light is 30 V/m, then the amplitude of the electric field for the wave propagating in the glass medium will be :
Choose an option
Show full solutionCorrect option: D
Correct answer
D24 V/m
Step-by-step explanation
Prefracted =
K2A = K1A
r2A = r1A
A =
A1
K2A = K1A
r2A = r1A
A =
A1
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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.