JEE Main 2022 — Electromagnetic Waves Question with Solution
From: JEE Main 2022 (Online) 29th July Evening Shift
Question
Nearly 10% of the power of a light bulb is converted to visible radiation. The change in average intensities of visible radiation, at a distance of from the bulb to a distance of is . The value of 'a' will be _________.
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Show full solutionCorrect answer: 84
Correct answer
84
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This is a previous-year question from JEE Main 2022, 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.