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What is photo electric effect

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What is photo electric effect

    • Posted by Manju Soni 5 years, 4 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Shraddha Kansal 5 years, 4 months ago

    The minimum frequency required to eject an electron from the surface of metal is called as photo electric effect

    0Thank You

    Yogita Ingle 5 years, 4 months ago

    The photoelectric effect was originally observed in 1939 and was documented by Heinrich Hertz in 1887. Initially, it was termed as the Hertz effect but later it was called the photoelectric effect.

    In 1880 Hertz and Lenard observed that when a clean metallic surface is irradiated by monochromatic light of proper frequency, electrons are emitted from it. This phenomenon of ejection of the electrons from metal surface was called as Photoelectric Effect.

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