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Homework Help: Photoelectric effect - experimental

  1. Oct 14, 2011 #1
    Photoelectric effect -- experimental

    1. The problem statement, all variables and given/known data
    Suppose you are doing an experiment to determine the work function of a metal.*
    You get k.e.$_1$, $\nu_1$ and k.e.$_2, \nu_2$.
    *
    We know that k.e.= $h\nu - W$ but when you solve the simultaneous equations, we have a $h$ slightly different from the textbook value.

    Question: In such a situation should you

    a) Use the textbook $h$ then average {$W_1,W_2$}; or

    b) Simply solve the simultaneous equations for $W$

    I believe that the values obtained will be different. And no further experiments are done.

    Thank you.


    2. Relevant equations
    see above.


    3. The attempt at a solution
    The 2 proposed methods of determining W
     
  2. jcsd
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