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T\begin{array} { l } { \text { Two metallic spheres of radii } 1 \mathrm { cm } \text { and } 2 \mathrm { cm } } \\ { \text { are given charges } 10 ^ { - 2 } \mathrm { C } \text { and } 5 \times 10 ^ { - 2 } \mathrm { C } } \\ { \text { respectively. If they are connected by a } } \\ { \text { conducting wire, the final charge on the } } \\ { \text { smaller sphere is } } \end{array}

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