The maximum kinetic energy of an electron released via the photoelectric effect for a certain material and wavelength is 3.

The maximum kinetic energy of an electron released via the photoelectric effect for a certain material and wavelength is 3.8 eV. When the wavelength of the light is doubled the maximum kinetic energy decreases to 1.0 eV.

a.) What is the work function of the material?

b.) What is the initial wavelength of the light?

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