1. f=c/wavelength
3. Workfunction=plancksconst*freq
3. figure the energy of 250 nm light, subtracat the work function, then the remainder energy is KE
The threshold wavelength of zinc is 390 nm.
1) Find the frequency of zinc
2) What is the work function in eVerything of zinc?
3) Zinc in a photocell is irradiated u ultraviolet light of 260 nm wavelength. What is the kinetic energy of the photoelectrons in eV?
1 answer
1 answer