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t_n_p
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Homework Statement
1. How can Planck's constant and the work function be determined from the following graph?
http://img507.imageshack.us/img507/9076/untitledgo5.jpg
2. Calculate the frequencies corresponding to the cut-off wavelengths for filters 15 and 29 in table 1. Take speed of light as 3*10^8 m/s.
http://img515.imageshack.us/img515/2240/untitled2jh5.jpg
The Attempt at a Solution
I know the following equations, but can't seem to piece it all together
KE = hf - W
KE = eVs (where Vs is called the stopping potential, the potential for which the photocurrent reaches a value equal to zero)
and Vs = (h/e)f - (W/e)
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