JEE Main 2023 — Dual Nature of Matter Question with Solution
JEE Main 2023 (01 Feb Shift 2)
Question
The threshold frequency of metal is . When the light of frequency is incident on the metal plate, the maximum velocity of photoelectron is . When the frequency of incident radiation is increased to . the maximum velocity of photoelectrons emitted is . The ratio of to is:
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Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Maximum kinetic energy is related to the incident frequency and the threshold frequency as:
When,
When,
Hence, the ratio,
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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.