Question

Two identical particles of mass m carry a charge Q each. Initially one is at rest on a smooth horizontal plane and the other is projected along the plane directly towards first particle from a large distance with speed $v_0$. The closed distance of approach be

• A. $\frac{k{Q}^2}{mv}$
• B. $\frac{4k{Q}^2}{m{v}^2}$
• C. $\frac{2k{Q}^2}{m{v}^2}$
• D. $\frac{k{Q}^2}{4m{v}^2}$

Answer 1

Answer: (B)