A simple pendulum has a time period T. The bob is now given some positive charge –
(1) If some positive charge is placed at the point of suspension, T will increases
(2) If some positive charge is placed at the point of suspension, T will not change
(3) If a uniform downward electric field is switched on, T will increase
(4) If a uniform downward electric field is switched on, T will decrease

Options

A. If some positive charge is placed at the point of suspension, T will increase.
B. If some positive charge is placed at the point of suspension, T will not change
C. If a uniform downward electric field is switched on , T will increase.
D. If a uniform downward electric field is switched on , T will decrease.

Answer

b, d