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Homework Help: What is the frequency v0 for the metal and what is the wavelength of the emit electro

  1. Nov 2, 2008 #1
    1. The problem statement, all variables and given/known data
    When light is frequency 2,00 x 10(in 16force) Hz prostrate a metal surface electrons are abstracted with kinetic energy 7,50 x 10(in -18force) J.

    Calculate:
    (a) The frequency v0 for the metal (v0: the minimum frequency of light, below which no electrons emitted).
    (b) The wavelength of the emitted electrons.



    2. Relevant equations
    i need help in this


    3. The attempt at a solution
    i really want some instructions or solution to understand better the subject
     
  2. jcsd
  3. Nov 2, 2008 #2

    Borek

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    Staff: Mentor

    Re: What is the frequency v0 for the metal and what is the wavelength of the emit ele

    Energy of photon = Energy needed to remove an electron + Kinetic energy of the emitted electron
     
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