A uniform mangetic field of strength B exists in a region of width d. A particle of charge q and mass m is shot perpendicularly (as shown in Fig. ) into the magnetic field. Find the time spent by the particle in the magnetic field if
(a) `dgt (m u)/(qB)`
(b) `dlt (m u)/(qB)`

Explanation

`sintheta=(d)/(R)`
`theta=sin^(-1)((d)/(R))`
`omegat=theta`
`impliest=(m)/(qB)sin^(-1)((d)/(R))`