Question: A rubidium surface has a work function of 2.16 eV. (a) What is the maximum kinetic energy of ejected electrons if the incident radiation is

A rubidium surface has a work function of 2.16 eV.
(a) What is the maximum kinetic energy of ejected electrons if the incident radiation is of wavelength 413 nm?
(b) What is the threshold wavelength for this surface?

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