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    • Photoelectric Effect-Dual Nature of Radiation and matter

    Photoelectric Effect-Dual Nature of Radiation and matter

    • Posted by admin
    • Categories 12th, Physics
    • Date December 27, 2019
    • Comments 0 comment
    photo-electric-effect

    The Definition of Photo electric effect given in above article. The phenomenon of emission of electrons from a metallic surface by the incidence of light (photons) is known as photoelectric effect. The emitted electrons are called photoelectrons. The below picture illustrates the photoelectric effect.

    Important terms:
    Threshold frequency (fo): The minimum frequency which photoelectric emission is not possible is known as threshold frequency. The value of threshold frequency is different for different metals.
    hfo = ϕ   [Where h=Planck’s constant]
    or, fo =ϕ/h
    Threshold wavelength (λo): The maximum wavelength of light which can eject photoelectrons from a surface is called threshold wavelength. It is the wavelength corresponding to threshold frequency.
    λo = c/fo[Where c =velocity of light]
    Work function (ϕ): The minimum energy required to eject an electron from the surface is called threshold energy or work function. It is denoted by ϕ and measured in eV. Its value depends on the nature of metal, its purity and the condition of the surface.

    Tag:about dual nature of radiation and matter, brief explanation about photoelectronic effect, photoelectronic effect, what is photoelectronic effect, what is the dual nature of radiation and matter

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      Hertz Photoelectric Effect
      December 27, 2019

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      Electron Emission- Dual Nature of Radiation and matter
      December 27, 2019

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