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[" Electromagnetic radiations having "lambda=310" A are subjected to a metal sheet having work function "=12.8],[" eV.What will be the velocity of photoelectrons with maximum Kinetic Energy...."],[[" (A) "0," no emission will occur "," (B) "2.18times10^(@)m/s],[" (C) "2.18sqrt(2)times10^(6)m/s," (D) "8.72times10^(6)m/s]]

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