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    Analyzng Photoelectric Effect

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    Infrared photons cause a particular piece of metal to emit photoelectrons.

    Will photoelectrons be emitted when the metal is illuminated by visible light?

    If not, why? If yes, what properties of the emitted photoelectrons will be different from the case of the infrared illumination?

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    Infrared photons cause a particular piece of metal to emit photoelectrons.
    Will photoelectrons be emitted when the metal is illuminated by visible light?

    Answer:
    According to Planck's relation, energy of a photon of a radiation corresponding to the frequency  is given by
    E = h

    Infrared rays have less frequency as compared to the frequency of the visible rays.
     Energy of infrared radiation is less than the energy of visible radiaion.

    As per Einstein's photoelectric equation,

    Incident photon ...

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