As shown in the figure, a configuration of two equal point charges (q_0=+2 μ C ) is placed on an inclined plane. Mass of each point charge is 20 g.…

As shown in the figure, a configuration of two equal point charges $\displaystyle \left(q_0=+2 \mu \mathrm{C}\right)$ is placed on an inclined plane. Mass of each point charge is $\displaystyle 20$ g . Assume that there is no friction between charge and plane. For the system of two point charges to be in equilibrium (at rest) the height $\displaystyle \mathrm{h}=x \times 10^{-3} \mathrm{~m}$.The value of $\displaystyle x$ is $\displaystyle \_\_\_\_$. (Take $\displaystyle \frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 \mathrm{~N} \mathrm{~m}^2 \mathrm{C}^{-2}, g=10 \mathrm{~m} \mathrm{~s}^{-2}$ )