Question: A rubidium surface has a work function of2.26eV. (a) What is the maximum kinetic energy of ejected electrons if the incident radiation is of wavelength417nm?

A rubidium surface has a work function of2.26eV.

(a) What is the maximum kinetic energy of ejected electrons if the incident radiation is of wavelength417nm?

_____eV

(b) What is the threshold wavelength for this surface?

______nm

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