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.

Now `P_(2)` is fixed in the equilibrium position obtained in last question and `P_(1)` is released so that it can rotate freely. In its equilibrium position `P_(1)` will point along:

Options

A. x-axis
B. along line joining `P_(1)` and `P_(2)`
C. y- axis
D. a line making an acute angle with positive x-axis

Answer

D

Explanation

Here In equilibrium `P_1` will align itself along the electric field of `P_2` . Check the direction of field at origin.