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Homework Help: Photoelectric Effect

  1. Jun 13, 2005 #1
    How would I find the threshold frequency if the work function is 3.33eV?
    I know how to calculate minimum frequency.
  2. jcsd
  3. Jun 13, 2005 #2
    [tex] K = \phi - hf_0 [/tex]
    where K is K.E.
    Now K>0
    therefore threshold frequency will be when K=0
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