Question
What is the minimum work function for a metal for visible light (wavelengths between 400 and 700 ) to eject photoelectrons?
Answers
Velaria
Does work function=hc divided by initial wavelength.
What would the initial wavelength be? 4x10E-7 nm?
What would the initial wavelength be? 4x10E-7 nm?
drwls
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.
Work function is expressed in volts. You will have to divide the photon energy by the electron charge, e.