The work function of a surface is 5.0 x 10 ^ -19 J. If light of wavelength of 300 nm is incident on the surface, what is the maximum kinestic energy of the photoelectrons ejected from the surface?
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h . c / λ – 5 . 10^–19 = KE(max)
6.63 . 10^–34 . 3 . 10^8 / 300 . 10^–9 = 6.63 . 10^–19 J
(6.63 – 5) = 1.63 . 10^–19 J = KE (max)
6.63 . 10^–34 . 3 . 10^8 / 300 . 10^–9 = 6.63 . 10^–19 J
(6.63 – 5) = 1.63 . 10^–19 J = KE (max)