JEE Main 2021 Physics question

A particle of mass 1 mg and charge q is lying at the mid-point of two stationary particles kept at distance '2 m' when each is carrying same charge 'q'. If the free charged particle is displaced from its equilibrium position through distance 'x' (x << 1 m). The particle executes SHM. Its angular frequency of oscillation will berad/s if =10.