Q. A uniform vertical field
E is established between two parallel plates. In this field, a small conducting sphere of mass
M is suspended from a string of length
l. If the sphere is given a charge
+q (stat-coulomb) and if lower plate is charged positively, the period of the simple pendulum is:
![823938_adb4ae57a159435485f44fb66bd451de.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/823938_adb4ae57a159435485f44fb66bd451de.png)