In figure-, an electric dipole is placed at a distance x from an infinitely long rod of linear charge density `lambda`.
(a) Find the net force acting on the dipole
(b) What is the work done in rotating the dipole through `180^(@)`
(c ) If the dipole is slightly rotated about its equilibrium position, find the time period of oscillation. Assume that the dipole is linearly restrained.
`[(a)(lambdaaq)/(piin_(0)x^(2)),(b) (2lambdaaq)/(piin_(0)x),(c ) 2pisqrt((2piin_(0)mx^(2)a)/(lambdaq))]`