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Explain the existence of threshold frequency of incident radiation for photoelectric emission from a given surface. - Physics

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Question

Explain the existence of threshold frequency of incident radiation for photoelectric emission from a given surface.

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Solution

The frequency of incident radiation at which the photoelectric effect does not exist is known as the threshold frequency. The electron has no kinetic energy at the threshold frequency; it is simply ejected. Additionally, the electron is expelled with kinetic energy when the radiation with a frequency higher than the threshold frequency strikes the surface.

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2023-2024 (February) Delhi Set - 1
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