Mass of charge $Q$ is $m$ and mass of charge $2Q$ is $4\,m$ . If both are released from rest, then what will be $K.E.$ of $Q$ at infinite separation
Mass of charge $Q$ is $m$ and mass of charge $2Q$ is $4\,m$ . If both are released from rest, then what will be $K.E.$ of $Q$ at infinite separation
- A
$\frac{{8K{Q^2}}}{{5r}}$
- B
$\frac{{4K{Q^2}}}{{5r}}$
- C
$\frac{{K{Q^2}}}{{4r}}$
- D
$\frac{{K{Q^2}}}{{2r}}$
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