Threshold frequency of a material is the minimum frequency of incident radiation needed to cause photoelectric emission from the surface of that material.
Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Session 2024-2025.
Define the term threshold frequency, in the context of photoelectric emission.
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Threshold frequency is the minimum frequency of light required to eject electrons from a material’s surface in the photoelectric effect. Below this frequency, no electrons are emitted, regardless of the light’s intensity, as the energy is insufficient to overcome the material’s work function.
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