A 2 keV positron is projected into uniform field of induction B of `0.10 T` with its velocity vector making an angle of `89^(@)` with B. Convince your-self that the path will be a helix, its axis being the direction ofB. Find the period, the pitch `p`, and the radiusr of the helix, see figure-4.250.

Answer

[(1) `3.6 xx 10^(-10)s`, (2), `0.17 xx 10^(-3) m`, (3) `1.5 xx 10^(-3)` m]