JEE Main 2023PhysicsDual Nature of MatterEasyMCQ

JEE Main 2023 — Dual Nature of Matter Question with Solution

JEE Main 2023 (31 Jan Shift 2)

Question

If the two metals A and B are exposed to radiation of wavelength 350 nm. The work functions of metals A and B are 4.8 eV and 2.2 eV. Then choose the correct option

Choose an option

Show full solutionCorrect option: D
Correct answer
DMetal A will not emit photo-electrons

Step-by-step explanation

As we know, for photoelectric emission, hν>ϕ.

Now,

hν=hcλ=1240350 eV=3.54 eV

Therefore, only metal B will emit photoelectrons.

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About this question

This is a previous-year question from JEE Main 2023, 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.