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![[Post New]](/templates/default/images/icon_minipost_new.gif) 5 Mar 2008 11:55:06 IST
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well i dont know the first part.....but i know second part
modulation index is the ratio of amplitudes of message signal and carrier wave..........from the graph the amplitude of message signal is 1 and that of carrier wave is given as 2.....modulation index == 1/2.........
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