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I vs V - Varying Frequency

When light fa...

Question

When light falls on a photosensitive surface, electrons are emitted from the surface. The kinetic energy of these electrons does not depend on the:

A

Wave length of light

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B

Frequency of light

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C

Type of material used for the surface

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D

Intensity of light.

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Solution

The correct option is C Intensity of light.
Kinetic energy of photo electrons depend on the wavelength of light, frequency of light, work function of metal, which is property of material, and thickness of the surface layer. Whereas it is independent of intensity of light.

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