Explore BrainMass

Explore BrainMass

    Energy of ejected electrons

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    A magnesium surface has a work function of 3.68 eV. Electromagnetic waves with a wavelength of 215 nm strike the surface and eject electrons. Find the maximum kinetic energy of the ejected electrons. Express your answer in electron volts.

    © BrainMass Inc. brainmass.com February 24, 2021, 2:24 pm ad1c9bdddf

    Solution Preview

    Electromagnetic waves with a wavelength of 215 nm have energy=
    h= Planck's constant= 6.63E-34 J s
    f=frequency= c/ wavelength;
    wavelength= 215 nm= 2.15E-07 m
    c= speed ...

    Solution Summary

    The solution calculates the kinetic energy of ejected electrons when electromagnetic waves strike the surface.