The electric potential at a point on the axis of an electric dipole depends on the distance $r$ of the point…
The electric potential at a point on the axis of an electric dipole depends on the distance $r$ of the point from the dipole as
$\propto r^{-1}$
$\propto r^{-2}$
$\propto r$
$\propto r^{-3}$
Solution
Electric potential at point on the axial position of electric dipole is given as
$
V=\frac{1}{4 \pi \varepsilon_0} \cdot \frac{p}{r^2} \text { i.e. } \quad V \propto \frac{1}{r^2} \Rightarrow V \propto r^{-2}
$