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Homework Help: The energry of an electron

  1. Oct 15, 2005 #1
    The kinetic energy of an electron is 2.00 eV. Find the wavelength.

    I used E=h(c/n) where n=wavelength.
    But the answer comes out wrong, please help.
  2. jcsd
  3. Oct 15, 2005 #2

    Chi Meson

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    did you use the correct value for Plank's constant (h)? Since you have energy in units of eV, you should use 4.14 x 10^-15 eVs.
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