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[" Figure shows a system of three concen...

[" Figure shows a system of three concentric metal shells "A,B" and "C" with radii "a,2a" and "3a" respectively."],[" Shell "B" is earthed and shell "C" is given a charge "Q" .Now if shell "C" is connected to shell "A" ,then the "],[" final charge on the shell "B" ,is equal to: "],[[" (A) "-(4Q)/(13)," (B) "-(8Q)/(11)],[" (C) "-(5Q)/(3)," (D) "-(3Q)/(7)]],[" (C) "-(5Q)/(3)]

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