JEE Main 2021 — Dual Nature of Matter Question with Solution
JEE Main 2021 (20 Jul Shift 2)
Question
A certain metallic surface is illuminated by monochromatic radiation of wavelength . The stopping potential for photoelectric current for this radiation is If the same surface is illuminated with a radiation of wavelength the stopping potential is The threshold wavelength of this surface for photoelectric effect is___________
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Show full solutionCorrect answer: 4
Correct answer
4
Step-by-step explanation
Using ,
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This is a previous-year question from JEE Main 2021, covering the Dual Nature of Matter 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.