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Homework Help: Plotting energy as a function of wavelength

  1. Mar 30, 2015 #1
    1. The problem statement, all variables and given/known data

    Given work function W=2eV
    Plot energy of an electron knocked off with respect to wavelength
    2. Relevant equations

    3. The attempt at a solution
    E=h (c/(lambda))-2

    I plotted this and I get a function that goes to infinity with zero wavelength and crosses the x axis at 6000 angstroms. I was just wondering if this shape of graph makes sense of if I'm just way off
  2. jcsd
  3. Mar 30, 2015 #2


    User Avatar
    2017 Award

    Staff: Mentor

    Very small wavelengths correspond to gamma rays, and the energy diverges if you go close to zero.
    Yes, that is the expected shape for the maximal energy of electrons.
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