Q. A charged particle $q$ is shot towards another charged particle $Q$ which is fixed, with a speed $v.$ It approaches $Q$ upto a closest distance $r$ and then returns. If $q$ is shot with speed $2v,$ the closest distance of approach would be
A) $\frac{r}{4}$
B) $\frac{r}{2}$
C) $2r$
D) $r$
Explanation
The correct answer is Option A: $\frac{r}{4}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.