Calculate the kinetic energy of the fastest electrons

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A 100W ultraviolet light source of wavelength 200nm illuminates a magnesium surface 5m away. (a) The photoelectric work function for a material is 3.25eV. Calculate the kinetic energy of the fastest electrons ejected from the surface. (b) Determine the maximum wavelength for which the photoelectric effect can be observed.

Reference no: EM13618892

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