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Homework Help: Emissive power question help needed

  1. May 21, 2008 #1
    Emissive power question help needed!!!

    The question is on emissive power emitted and i have attached it as a file


    E=stefan boltzmann constant * T^4


    E=(5.67*10-8) * (923)^4
    E = 41151.9

    Don't know how to get the wavelength from this
    should i use Plancks equation for emissive wavelength

    To help the answers are included, its a multiple choice paper

    thanks for your help
  2. jcsd
  3. May 21, 2008 #2


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    Staff Emeritus
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    Look up Wien's Displacement Law.
  4. May 22, 2008 #3
    yeh thats it thanks!!!! didnt think of that eqution because i havent used it since a level physics !!
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