Question

A particle of charge q and mass m is subjected to an electric field E = E₀(1 – ax²) in the x-direction, where a and E₀ are constants. Initially the particle was at rest at x = 0. Other than the initial position the kinetic energy of the particle becomes zero when the distance of the particle from the origin is

(1) √3/a 

(2) √2/a 

(3) √1/a 

(4) a

Answer 1

Answer is (1) √3/a