Two identical small spheres carry charge of $Q_1$ and $Q_2$ with $Q_1>>Q_2.$ The charges are $d$ distance apart. The force they exert on one another is $F_1.$ The spheres are made to touch one another and then separated to distance $d$ apart. The force they exert on one another now is $F_2.$ Then $F_1/F_2$ is

  • A

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

  • B

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

  • C

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

  • D

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

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