Two identical particles having the same mass m and charges +q and -q separated by a distance d enter in a uniform magnetic field B directedd perpendicular to paper inwards with speeds `v_1` and `v_2` as shown in fig. The particles will not collide if (Ignore electrostatic force)

Options

A. `d gt m/(Bq)(v_1+v_2)`
B. `d lt m/(Bq)(v_1+v_2)`
C. `d gt (2m)/(Bq)(v_1+v_2)`
D. `v_1 = v_2`

Answer

C