Question: a light source of wavelength lambda illuminates a metal and ejects photoelectrons with a macimuim kinetic energy of 1 . 8 ev . A second

a light source of wavelength lambda illuminates a metal and ejects photoelectrons with a macimuim kinetic energy of 1.8 ev. A second light source of wavelength ejects photoelectrons with a maximum kinetic energy of 5 eV. What is the work function of the metal?

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