A point charge in placed at any point on the axis of an electric dipole at some large distance, experiences a force F. The force acting on the point charge when it's distance from the dipole is halved will be

$8F$

Electric field due to dipole is $ E\propto \frac{1}{r^3}$

If the distance is reduced to half then force become 8 times.

The correct answer is Option (2) → $8F$