Hello there

Ani let’s say electron took time t to cover those distance
Hamilai formula thaha xa

               s = ut + ½ a t²

So, x direction ma

x = u_x t + ½ a t²

x axis ma no influence of electrostatic force, so F = 0 => a = 0

               So, x = u_x t

ð  t = x/u_{x  ……………………………..}(i)

Aba y direction ma

               y = u_y t + ½ a t² _{………………………} (ii)

aba y direction ma electrostatic force lagxa
which is F = E e

ð  ma = Ee

ð  a = Ee/m

In (ii),

               y = u_y t = ½ Ee/m t²

Aba suru ma ta velocity in y direction 0 thiyo

So u_y  = 0

ð  y = ½ Ee/m t²

Also, from (i),

ð  y = ½ Ee/m x²/u_x²

Here,

Electric Field (E) is constant

Charge of electron (e) is constant

Mass of electron (m) is constant

Velocity in x direction (u_x) is constant

That means, we can say

ð  y ∝ x²

This is in quadratic form
matlab parabola 🎈