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[" (c) "0.2V],[" 25.Three connectric met...

[" (c) "0.2V],[" 25.Three connectric metallic spherical shells of radii "R" ,"],[2R,3R," are given charges "Q_(1),Q_(2),Q_(3)," respectively.It is "],[" found that the surface charge densities on the outer "],[" surfaces of the suells are equal.Then the ratio of the "],[" charges given to the shells,"Q_(1):Q_(2):5],[" (a) "1:2:3],[[" (a) "1:4:9," (d) "1:8:18],[" (6) "1:4:9," (d) "1:8:18]],[" (6) A ball with charge - "50e" is placed at the centre of a "]

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