MCQ
Photoelectric effect can be caused by
  • A
    visible light but not $X-$ rays
  • B
    Gamma rays but not by $X-$ rays
  • C
    $U.V.$ light only
  • Visible light, $U.V.$ rays and Gamma rays also

Answer

Correct option: D.
Visible light, $U.V.$ rays and Gamma rays also
d

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