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Physics · Atomic Physics

JEE Main 2025 — 22 January, Evening Shift — Question 55

A light source of wavelength λ\lambda illuminates a metal surface and electrons

are ejected with maximum kinetic energy of 2 eV . If the same surface is illuminated

by a light source of wavelength λ2\frac{\lambda}{2}, then the maximum kinetic energy of

ejected electrons will be (The work function of metal is 1 eV )

  1. Option A:

    2 Ev

  2. Option B:

    6 eV

  3. Option C:

    5 eV

    Correct
  4. Option D:

    3 eV

Answer: C

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Exam
JEE Main 2025
Paper
22 January, Evening Shift
Subject
Physics
Chapter
Atomic Physics
Topic
Photoelectric Effect

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