Q. A flat circular disc has a charge $+ Q$ uniformly distributed on the disc. A charge $+ q$ is thrown with kinetic energy $E$ towards the disc along its normal axis. The charge $q$ will
A) Hit the disc at the centre
B) Return back along its path after touching the disc
C) Return back along its path without touching the disc
D) Any of the above three situations is possible depending on the magnitude of $E$
Explanation
The correct answer is Option D: Any of the above three situations is possible depending on the magnitude of $E$.
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.