A. When light of wavelength 250 nm is incident on a metal surface, the maximum speed of the photoelectrons is 4.0 × 105 m/s, what is the work function of the metal in electron volts?
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63 x 10^-34 J*s), c is the speed of light (3 x 10^8 m/s), and λ is the wavelength of light (250 nm = 250 x 10^-9 m). E = (6.63 x 10^-34 J*s * 3 x 10^8 m/s) / (250 x 10^-9 m) E = 7.956 x 10^-19 J Show more…
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