JEE Main 2025 — Dual Nature of Matter Question with Solution
JEE Main 2025 (22 Jan Shift 1)
Question
The work functions of cesium (Cs) and lithium (Li) metals are 1.9 eV and 2.5 eV , respectively. If we incident a light of wavelength 550 nm on these two metal surfaces, then photo-electric effect is possible for the case of
Choose an option
Show full solutionCorrect option: C
Correct answer
CCs only
Step-by-step explanation
Possible for as
Not for Li as
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This is a previous-year question from JEE Main 2025, 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.