Physics Question from JEE Main 2023 · 24 January, Shift 1

A stream of positively charged particles having $q/m = 2 \times 10^{11} \, \text{C/kg}$ and velocity $v_0 = 3 \times 10^7 \, \text{m/s}$ is deflected by an electric field $\vec{E} = 1.8 \, \hat{j} \, \text{kV/m}$. The electric field exists in a region of $10 \, \text{cm}$ along the $x$-direction. Due to the electric field, the deflection of the charged particles in the $y$-direction is _____ mm.