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Work function of a metal is 3.9 eV/atom. Maximum kinetic energy of photo electrons when the metal is bombarded with a radiation of wavelength 200 nm is
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Correct option is B
Energy of incident ray eV/atom =1240λ(nm)=1240200=6.2 eV/atom ; K.Emax=Eincident-W.F ; K.Emax=6.2-3.9 eV/atom ;Similar Questions
In a Photo electric effect experiment, A metal ‘X’ is irradiated by two incident radiations in two different experiments. If the ratio of incident frequencies is 1:2 and the ratio of kinetic energy of photo electrons is 1:3. Then the correct relation is (where are incident frequencies in experiment one and two respectively and is the threshold frequency of the metal ‘X’)
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