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The minimum energy necessary of overcome the attractive force between the electron and the surface of silver metal is `7.52xx10^(-19)` J. What will be the maximum kinetic energy of the electrons ejected from silver which is being irradiated with ultraviolet light having a wavelength `360Å`?

Text Solution

Verified by Experts

The correct Answer is:
`47.68xx10^(-19)` Joule
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The minimum energy requried to overcome the attractive forces between an electron and the surface of Ag metal is 5.52xx10^(-19) J. what will be the maximum kinetic energy of electrons ejected out from Ag which is being exposed to UV light of lamda=360 Ã…?

The minimum energy required overcoming the attractive forces between electron and the surface of a Ag metalis 7.52xx10^(-19)J . What will be the maximum kinetic enerlgy of electron ejected out from Ag which is beign exposed to UV light of lamda=360Å .

Knowledge Check

  • The photo electric threshold wavelength of Tungsten is 2300 Å. The energy of the electrons ejected from the surface by ultraviolet light of wavelenghth 1800 Å is

    A
    0.15 eV
    B
    1.5 eV
    C
    15 eV
    D
    150 eV

  • For silver metal, the threshold frequency v_(0) is 1.13x10^(17)Hz . What is the maximum kinetic energy of the photoelectrons produces by shining U.V light of 15.0Å wavelength on the metal?

    A
    `2xx10^(17)J`
    B
    `5.8xx10^(17)J`
    C
    `2.9xx10^(17)J`
    D
    None

  • The minimum energy required for the emission of photoelectron from the surface of a metal is 4.95 xx10^(-19)J . Calculate the critical frequency of the photon required to eject the electron . h = 6.6 xx10^(-34) J sec

    A
    `7.5xx10^(14)s^(-1)`
    B
    `7.5xx10^(13)s^(-1)`
    C
    `7.5xx10^(16)s^(-1)`
    D
    `7.5xx10^(19)s^(-1)`

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    The minimum energy required to overcome tha attractive forces between an electron and the surface of Ag metal is 5.52 xx 10^(19)J . What will be the maximum kinetic energy of electron ejected out from Ag which is being exposed to UV-light of lambda = 360 A^(@) ?

    The wavelength associated with the cutoff frequency for silver is 325 nm. Find the maximum kinetic energy of electrons ejected from a silver surface by ultraviolet light of wavelength 275 nm.

    What will be the maximum kinetic energy of the photoelectrons ejected from magnesium (for which the work -function W=3.7 eV) when irradiated by ultraviolet light of frequency 1.5xx10^15 s^(-1) .

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    Light of wavelength 2000Å is incident on a metal surface of work function 3.0 eV. Find the minimum and maximum kinetic energy of the photoelectrons.

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