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![[Post New]](/templates/default/images/icon_minipost_new.gif) 9 Mar 2008 13:12:44 IST
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when light of some freq is incident on atoms...then the electrons jump to next orbitals by using the energy provide....now again whn they come back to their original orbits. they emit enery...this is of diff freq and thus we get spectrun..the elect. absro light and we get absorption spectra which is black lines on a white backgrouund and when e;lect. emit energy we get emission spectra... which is bright lines on black background....rate me if u r satified...
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