JEE Main 2014 — Electromagnetic Waves Question with Solution
From: JEE Main 2014 (Online) 12th April Morning Slot
Question
A lamp emits monochromatic green light uniformly in all directions. The lamp is 3% efficient in converting electrical power to electromagnetic waves and consumes 100 W of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of 5 m from the lamp will be nearly :
Choose an option
Show full solutionCorrect option: B
Correct answer
B2.68 V/m
Step-by-step explanation
Since Intensity
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This is a previous-year question from JEE Main 2014, 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.