A particle of mass 1 mg and charge q is lying at the mid-point of two stationary particles kept at a distance ' 2 m ' when each is carrying same…

A particle of mass $\displaystyle 1$ mg and charge q is lying at the mid-point of two stationary particles kept at a distance ' $\displaystyle 2$ m ' when each is carrying same charge ' q '. If the free charged particle is displaced from its equilibrium position through distance '$\displaystyle x$' $\displaystyle (x \ll 1 \mathrm{~m})$. The particle executes SHM. Its angular frequency of oscillation will be \_\_\_\_ $\displaystyle \times 10^5 \mathrm{rad} / \mathrm{s}$ if $\displaystyle q^2=10 \mathrm{C}^2$.