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a photon of energy 10.2 eV collides inelastically wid a stationary hydrogen atom(in ground state). After a few micro-second another photon of energy 15 eV collides wid d same hydrogen atom...wich of d foll wil b detected by a suitable detector?
a) one photon of 10.2eV and an electron of energy 1.4 ev.
b)one photon of 3.4eV and an electron of energy 10.2 ev.
c) 2 photons of energy 10.2 eV
d) 2 photons of energy 3.4 eV
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