The electric field at a point due to an electric dipole, on an axis inclined at an angle `theta ( lt 90^(@))` to the dipole axis, is perpendicular to the dipole axis, if the angle `theta` is

Options

A. `tan^(-1)(2)`
B. `tan^(-1)(sqrt(2))`
C. `tan^(-1)(1//sqrt(2))`
D. Zero

Answer

B

Explanation

`alpha + theta=90, tan alpha=1/2 tan theta`