A long cylindrical conductor of radius R having a cylindrical cavity of radius R/2 through out its length is lying with its axis parallel to x-axis. The distance between the axes of the cylinder and the cavity length in the positive x direction. The across sectional view of the cylinder is shown in the figure
A charged particle having specific charge (charge to mass ratio) is `(18 pi)/(mu_(0) I) xx 10^(6)` SI unit is projected from a point on the axis of the cavity along x-axis with the speed of 10^6 m/s. Radius of curves of the path of the particle is equal to
