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KCET2019PhysicsDual Nature of Matter

Light of certain frequency and intensity incident on a photosensitive material causes photoelectric effect. If both the frequency and intensity are doubled, the photoelectric saturation current becomes

Options

  1. Ahalved
  2. Bquadrupled
  3. Cunchanged
  4. Ddoubled

Correct answer

D. doubled

Step-by-step solution

(D) We know photoelectric current is directly proportional to the intensity of incident light provided incidentfrequency is greater than threshold frequency. ( ) When intensity is doubled, photoelectric saturation current doubles.

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