A charge particle having mass of 1.6 × 10–26 kg comes out of accelerator tube with kinetic energy 2×103 eV. Calculate the smallest magnitude of magnitic field that should be applied in vertically downwards direction to just prevent the charge particle from colliding the plate (Assume charge on particle = charge of proton)
(A) 2 Tesla
(B) 4 Tesla
(C) 0.02 Tesla
(D) 0.04 Tesla
