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What is the name given to the minimum en...

What is the name given to the minimum energy of incident radiation required to free an electron from the surface of a metal?

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The minimum energy required to ejected an electron from the surface of a metal is called............ .

The minimum energy required to eject electrons from the surface of a metal is called.....or.......

Knowledge Check

  • The minimum energy required to eject an electron from an atom is called

    A
    Kinetic energy
    B
    Electrical energy
    C
    Chemical energy
    D
    Work function

  • The minimum energy required to remove an electron is called

    A
    Stoping potential
    B
    Kinetic energy
    C
    Work function
    D
    None of these

  • Monochromatic light incident on a metal surface emits electrons with kinetic energies ranging from 0 to 2.5 eV. What is the least energy of the incident photon, if for removing the tightly bound electron from the metal surface an energy of 4.3 eV is required ?

    A
    1.8 eV
    B
    6.8 eV
    C
    from 1.8 eV to 6.8 eV
    D
    3.4 eV

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    A metal having a threshold frequency of v_0//2 is illuminated by the incident radiation of frequency 2v_0 . If the energy of the incident photon is increased by 40 percent , then what will be the percentage change in the kinetic energy of the photoelectrons emitted from the surface of the metal ? Note that increase in energy of photon is done by suitably changing frequency of radiation.

    Is there a time lag between the incident radiation and the emission of electrons from a metal?

    Electrons with a kinetici energy of 6.023xx10^(4)J//mol are evolved from the surface of a metal, when it is exposed to radiation of wavelength of 600 nm. The minimum amount of energy required to remove an electron fro the metal atom is:

    With the decrease in the wave length of the incident radiation the velocity of the photoelectrons emitted from a given metal

    A when a photon of energy hv is incidnet on an electron in a metal of work function phi ( lt hv) , the electron will not necesserily come out of the metal . R : work function is the minimum energy required to liberate an electron out of a metal . So some electons may require more energy for their liberation .

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