A charged particle having mass m and charge q is acceleration by a potential difference V, it files through a uniform tranverse magnetic field b.The field occupies a region of space d.Find the time interval for which it remains inside the magnetic field
(i) An `alpha` particle is acceleration by a potential difference of `10^(4)`V. Find the change in tis direction of motiom if it enters normally in a region of thicknees 0.1 , having transverse magnetic induction of `0.1T(m_(aplha)=6.4xx10^(-27)kg)`
(ii) a 10 g bullet having a charge of `4muC` is fired at a speed `270ms^(-1)` in a horizontal direction,A vertical magnetic field as it travels through 100 m .Make appropriate approximations