AP EAMCET Engineering 22 Apr 2019 Shift 2 Paper

A dipole has two charges +1 µC and -1 µC and each of mass 1 kg. The separation between the charges is 1 m. An electric field 20 × 103 Vm−1 is applied on the dipole. If the dipole is deflected through 2° horn equilibrium position, then the time taken by it to come to equilibrium position again is