A beam of alpha particle passes underflected with a horizontal velocity v, through a region
Channel: Doubtnut
Date: 02/08/2020

A beam of alpha particle passes underflected with a horizontal velocity v, through a region of electric and magnetic fields, mutually perpendicular to each other and normal to the direction of the beam. If the mangnitude of the electric and magnetic fields are `120kVm^-1` and `60mT` respectively, calculate (i) velocity of the beam (ii) force with which it strikes a target on a screen, if the alpha particle beam current is equal to `1mA`? Mass of proton=mass of neutron `=1*675xx10^(-27)kg`.