A proton of mass `1.67xx10^(-27)kg` and charge `1.6xx10^(-19)c` is projected with a speed of `2xx10^(6)m//s` at an angle of `60^(@)` to the x-axis. If a uniform magnetic field of `0.104` Tesla is applied along Y-axis, the path of proton is

Options

A. A circle of radius `=0.2 m` and time period `pixx10^(-7)s`
B. A circle of radius `=0.1m` and time period `2pixx10^(-7)s`
C. A circle of radius `=0.1m` and time period `2pixx10^(-7)s`
D. A helix of radius `=0.2m` and time period `4pixx10^(-7)s`

Answer

C