Three concentric conducting spherical shells have radius $ r, 2r$ and $3r$ and $Q_1, Q_2$ and $Q_3$ are final charges respectively. Innermost and outermost shells are already earthed as shown in figure. Choose the wrong statement.

115-942

  • A

    $Q_1 + Q_3 = - Q_2$

  • B

    $Q_1 = $ $\frac{-Q_2}{4}$

  • C

    $\frac{Q_3}{Q_1}$ $= 3$

  • D

    $\frac{Q_3}{Q_2}=\frac{-1}{3}$

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