JEE Main 2014 — Electromagnetic Waves Question with Solution
JEE Main 2014 (12 Apr Online)
Question
A lamp emits monochromatic green light uniformly in all directions. The lamp is efficient in converting electrical power to electromagnetic waves and consumes of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of from the lamp will be nearly:
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Wavelength of monochromatic green light
Now, half of this intensity (I) belongs to electric field and half of that to magnetic field, therefore,
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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.