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A photo-cell employs photoelectric effect to convert:

  1. A
    change in the frequency of light into a change in electric voltage.
  2. B
    change in the intensity of illumination into a change in photoelectric current.
  3. C
    change in the intensity of illumination into a change in the work function of the photocathode.
  4. D
    change in the frequency of light into a change in the electric current.

Solution & Step-by-step Explanation

A photocell (or photoelectric cell) works on the principle of the photoelectric effect. As the intensity of incident light increases, the number of photons striking the metal surface per second increases, leading to a proportional increase in the emission rate of photoelectrons. Thus, it converts changes in light intensity into changes in photoelectric current.

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A photo-cell employs photoelectric effect to convert:
A
change in the frequency of light into a change in electric voltage.
B
change in the intensity of illumination into a change in photoelectric current.
C
change in the intensity of illumination into a change in the work function of the photocathode.
D
change in the frequency of light into a change in the electric current.

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