This section contains 10 questions. Each question, when worked out will result in one integer from 0 to 9 (both inclusive).

Two parallel wires in the plane of the paper are distance X_{0} apart. A point charge is moving with speed u between the wires in the same plane at a distance X_{1} from one of the wires. When the wires carry current of magnitude I in the same direction, the radius of curvature of the path of the point charge is R_{1}. In contrast, if the currents I in the two wires have directions opposite to each other, the radius of curvature of the path is R_{2}. If X_{0}/X_{1} = 3, the value of R_{1}/R_{2} is