Posted by Velaria on Friday, November 14, 2008 at 5:58am.
Does work function=hc divided by initial wavelength.
What would the initial wavelength be? 4x10E-7 nm?
The 400 nm photons would be the ones most capable of ejecting electrons. The work function you calculate with your formula will lead to the maximum work function that would allow ejection, not the minimum.
Work function is expressed in volts. You will have to divide the photon energy by the electron charge, e.
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