MDCAT Physics MCQ #2539

The phenomenon of electron emission from a metal surface when light is shone on it is known as

MDCAT Physics MCQ #2539

  1. Question 1

    Q1. The phenomenon of electron emission from a metal surface when light is shone on it is known as

    • A) Photoelectric effect
    • B) Thermionic emission
    • C) Field emission
    • D) Secondary emission

    Answer: Photoelectric effect

    Explanation: Photoelectric effect involves light-induced electron emission; energy depends on light frequency, not intensity.