Question: Electromagnetic waves, with frequencies ranging from 4.00 1014 Hz to 9.00 1016 Hz, are incident on an aluminum surface. Given that the work

Electromagnetic waves, with frequencies ranging from 4.00 × 1014 Hz to 9.00 × 1016 Hz, are incident on an aluminum surface. Given that the work function of aluminum is 4.08 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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