Two identical particles of mass $m$ and charge $q$ are shot at each other from a very great distance with an initial speed $v$. The distance of closest approach of these charges is

  • [KVPY 2010]
  • A

    $\frac{q^2}{8 \pi \varepsilon_0 m v^2}$

  • B

    $\frac{q^2}{4 \pi \varepsilon_0 m v^2}$

  • C

    $\frac{q^2}{2 \pi \varepsilon_0 m v^2}$

  • D

    $0$ 

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