Photoelectric effect
The phenomenon of ejection of electron from the surface of a metal when light of a suitable frequency strikes on It, is called photoelectric effect. The emitted electrons are called photo-electrons.
1. For each metal, certain minimum frequency of light is needed to eject electrons. This is known as threshold frequency (v0).
2. The kinetic energy of the ejected electrons is directly proportional to the frequency of the incident radiation and is independent of its intensity.
3. The numbers of electrons ejected per seconds from the metal surface depends upon the intensity of incident radiation but does not depend upon its frequency.
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