Consider two electric dipoles `P_(1)` and `P_(2)` placed at (0, 0) and (1,`sqrt2` ) respectively. The centers of these dipoles are fixed so that they can rotate about their centers but the centers cannot move. Answer the following questions based on this arrangement.

Initially `P_(1)` is held such that it is pointing towards positive x-axis and `P_(2)` is free to rotate. In the equilibrium position, `P_(2)` will point :

Options

A. along x axis
B. along y-axis
C. along line joining `P_(1)` and `P_(2)`
D. along some arbitrary angle from x-axis

Answer

B

Explanation

In equilibrium position, `P_2` will align itself `botr to P_1` (along the electric field of `P_1`) along y-axis.