AP EAMCET Engineering 21 Apr 2019 Shift 2 Paper

Two long parallel plates A and B are separated by a distance of 4 cm with an electric field of 45.5 Vm−1 between the plates directed normally from plate A to plate B. as shown in the figure. An electron is projected from plate A with velocity v at an angle of 30° with the surface of plate A. The maximum value of v so that the electron does not hit plate B is
(Assume gravity free space, charge of electron = 1.6 × 10−19 C and mass of electron = 9.1 x 10−31 kg)