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Another quick question

  1. Aug 14, 2006 #1
    With what speed will the fastest photoelectrons be emitted from a surface wih threshold wavelength of 600nm when the surface is illuminated with light of wavelength of 400nm?
     
  2. jcsd
  3. Aug 14, 2006 #2
    We aren't going to help you if you don't show us what you've tried already.
     
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