A particle of mass `m` and charge `q` is projected into a region having a perpendicular magnetic, field `B`. Find the angle of deviation of the particle as it comes out of the magnetic field if th,, width of the region is (b)
(a) `(2mv)/(Bq) (b) `(mv)/(Bq)` (c) `(mv)/(2 Bq)`
A. `pi//4`
B. `pi//3`
C. `pi//2`
D. `pi`
