Two point charges placed a distanced apart in vacuum exert a force of magnitude F on each other. One of the two charges is doubled. To keep the magnitude of force same the separation between the charges should be changed to |
$2d$ $d/2$ $sqrt{2}d$ $d/\sqrt{2}$ |
$sqrt{2}d$ |
The correct answer is Option (3) → $sqrt{2}d$ |