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[" -2.9A photon of wavelength "4times10^...

[" -2.9A photon of wavelength "4times10^(-7)m" strikes on metal surface,the work function of "],[" the metal being "2.13eV" .Calculate (i) the energy of the photon (eV),(ii) the kinetic "],[" energy of the emission,and (1i1) the velocity of the photoelectron "],[11eV=1.6020times10^(-19)J" )."]

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