The electric field intensity at the mid point of a dipole with charge ±q and dipole length 2a is:

$\frac{1}{4πε_0}\frac{2q}{a^2}$ $\frac{1}{4πε_0}\frac{4q}{a}$ $\frac{1}{4πε_0}\frac{q}{a^2}$ Zero

$\frac{1}{4πε_0}\frac{2q}{a^2}$

The correct answer is Option (1) → $\frac{1}{4πε_0}\frac{2q}{a^2}$