The threshold wavelength of potassium is 558 nm.
(a) What is the work function (in eV) for potassium?
(b) What is the stopping potential when 400 nm light is incident potassium?
Please answer clearly and in detail, thanks.
The threshold wavelength of potassium is 558 nm. (a) What is the work function (in eV)...
In the photoelectric effect, you got familiar with threshold frequency, stopping potential, and how they are inter-related. The wavelength() corresponding to the threshold frequency of potassium is 558 nm. What is the work function for potassium? What is the maximum kinetic energy of e- when light of 400 nm is incident on potassium? If the intensity of light is 10-2W/m², how many photons are incident per second per square meter? (4 points)
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just need help on part b. Thanks
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