Question

Increasing the brightness of incoming light (irrespective of its frequency) increases the number of ejected electrons. True or False. please explain.

Answer 1

1. Brightness is the perceived Intensity of light coming from source. It can be measured in terms of the amplitude of the light being emitted from the source.

2. Increase in brightness means increase in the intensity of the incident light. Thus increase in brightness increases the number of ejected electrons .

3. As intensity of incident light is increased this means the number of photons that are incident on the surface are increased which will result in increase in number of ejected electrons.

Hence the ansean is " TRUE".

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