A stream of a positively charged particles having q/m=2 × 10^11 C/(k g) and velocity v_0=3 × 10^7 i m / s is deflected by an electric field 1.8 j kV…

A stream of a positively charged particles having $\displaystyle \frac{q}{m}=2 \times 10^{11} \frac{C}{k g}$ and velocity $\displaystyle \vec{v}_0=3 \times 10^7 \hat{i} \mathrm{~m} / \mathrm{s}$ is deflected by an electric field $\displaystyle 1.8 \hat{j} \mathrm{kV} / \mathrm{m}$. The electric field exists in a region of $\displaystyle 10$ cm along $\displaystyle x$ direction. Due to the electric field, the deflection of the charge particles in the $\displaystyle y$ direction is $\displaystyle \_\_\_\_$ mm.