# Photoelectric effect - experimental

1. Oct 14, 2011

### MarkovMarakov

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