A charged particle (mass m and charge q) moves along X axis with velocity V_{0}. When it passes through the origin it enters a region having uniform electric field $\vec{E}=-E\hat{j}$ which extends upto x = d. Equation of path of electron in the region x > d is :

(1) $y={qEd\over mV_0^2}x$

(2) $y={qEd\over mV_0^2}(x-d)$

(3) $y={qEd\over mV_0^2}\left({d\over2}-x\right)$

(4) $y={qEd^2\over mV_0^2}x$