Monochromatic light is incident on a metal surface, and electrons are ejected. I

Question

Monochromatic light is incident on a metal surface, and electrons are ejected. If the intensity of the light increases, what will happen to the maximum energy of the electrons?

Monochromatic light is incident on a metal surface, and electrons are ejected. If the intensity of the light increases, what will happen to the maximum energy of the electrons?

A) The maximum energy will increase.    B) The maximum energy will decrease. C) The maximum energy will remain the same. D) Changes in the maximum energy cannot be determined without additional information.

Explanation / Answer

It will not change. The intensity increase will increase the number of electrons moving but will NOT increase their maximum energy and it is that maximum energy that determines the required stopping potential.

C) The maximum energy will remain the same.

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