MCQ
Two identical charges $+Q $ are kept fixed some distance apart. A small particle $P $ with charge $q$ is placed midway between them. If $P$ is given a small displacement $\Delta$ , it will undergo simple harmonic motion if
- A$q$ is positive and $\Delta$ is along the line joining the charges.
- B$q$ is positive and $\Delta$ is perpendicular to the line joining the charges.
- C$q$ is negative and $\Delta$ is perpendicular to the line joining the charges.
- ✓$A$ and $C$ both
