Q145 / 180 · KCET 2019 · Physics

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

  • A
    halved
  • B
    quadrupled
  • C
    unchanged
  • Correct answer
    D
    doubled

Solution

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

Hence, the correct answer is option: 'D'.

Relevant Questions