UPSC CAPF AC 2020 Paper

Question : 23 of 125

Marks: +1, -0

Which one of the following statements on photoelectric effect is not correct?

Albert Einstein received the Nobel Prize in Physics for explaining photoelectric effect.
For each metal, there is a threshold frequency v0 below which this effect is not observed.
At a frequency v>v0, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light.
The number of electrons ejected is proportional to the intensity of incident light.

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