White light, with frequencies ranging from 4.00 1014 Hz to 7.90 1014 Hz, is incident
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White light, with frequencies ranging from 4.00 × 1014 Hz to 7.90 × 1014 Hz, is incident on a barium surface. Given that the work function of barium is 2.52 eV, find
(a) The maximum kinetic energy of electrons ejected from this surface and
(b) The range of frequencies for which no electrons are ejected?
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