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[" 47.Three charges "+4q," Q and q are p...

[" 47.Three charges "+4q," Q and q are placed in a straight line of length / at distance "0,(1/2)" and "1],[" respectively.The magnitude of "Q" in order to make the net force on "q" is zero is "Q=nq" then value of "n],[[" is "," (A) "1," (C) "4," (D) "3]]

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