Question

explain photoelectric effect.

Answer 1

Answer:

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PHOTO ELECTRIC EFFECT :-

It refers to the emission or ejection of electrons from the surface of , generally , a metal in response to incident light

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Answer 2

Explanation:

Photoelectric effect was first introduced by Wilhelm Ludwig Franz Hallwachs in the year 1887 and the experimental verification was done by Heinrich Rudolf Hertz. They observed that when a surface is exposed to electromagnetic radiation at a higher threshold frequency, the radiation is absorbed and the electrons are emitted. Today, we study photoelectric effect as a phenomenon which involves a material absorbing electromagnetic radiation and releasing electrically charged particles.

To be more precise, light incident on the surface of a metal in the photoelectric effect causes electrons to be ejected. The electron ejected due to the photoelectric effect is called a photoelectron and is denoted by e–. The current produced as a result of the ejected electrons is called photoelectric current.

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