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Physics 11 Online
OpenStudy (anonymous):

Light described by the equation E= (90 V/m)[sin(6.28 × 1015 s-1) t + sin(12.56 × 1015 s-1) t] is incident on a metal surface. The work function of the metal is 2.0 eV. Maximum kinetic energy of the photoelectrons will be what?

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