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Question 600224
JEE Chemistry · Medium

Atomic Structure: Photoelectric effect MCQ

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Photoelectric effectMediumQuestion 600224

Question

The maximum kinetic energy of photoelectrons in the photoelectric effect is:
  1. A
    hν
  2. B
    hν − φ
    Correct
  3. C
    hν + φ
  4. D
    φ − hν

Correct answer

hν − φ

Explanation

KE_max = hν − φ, where φ is the work function (minimum energy to eject electron). This is Einstein's photoelectric equation.

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