Two particles $X $ and $Y$, of equal mass and with unequal positive charges, are free to move and are initially far away from each other. With $Y$ at rest, $X$ begins to move towards it with initial velocity $u$. After a long time, finally
Two particles $X $ and $Y$, of equal mass and with unequal positive charges, are free to move and are initially far away from each other. With $Y$ at rest, $X$ begins to move towards it with initial velocity $u$. After a long time, finally
- A
$X$ will stop, $Y$ will move with velocity $u$.
- B
$X$ and $Y$ will both move with velocities $u/2 $ each.
- C
$X $ will stop, $Y$ will move with velocity $< u.$
- D
both will move with velocities $< u/2.$
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