MDCAT Chemistry MCQ #963

In a photoelectric effect experiment using zinc, what happens if ultraviolet light intensity is doubled but frequency remains constant?

MDCAT Chemistry MCQ #963

  1. Question 1

    Q1. In a photoelectric effect experiment using zinc, what happens if ultraviolet light intensity is doubled but frequency remains constant?

    • A) More electrons ejected with same kinetic energy
    • B) Fewer electrons ejected with higher kinetic energy
    • C) Electron emission stops completely
    • D) Electron kinetic energy doubles

    Answer: More electrons ejected with same kinetic energy

    Explanation: Higher intensity increases electron quantity but not energy, which depends only on photon frequency. Option D confuses intensity with frequency effects.