Two identical simple pendulums P and Q are susupended from a common point. The bobs of both the pendulums are positively charged but the magnitude of charge on the bob of P is double to that on Q, Both the bobs repel and reach equilibrium. If the thread of P makes an angle `theta_1` with the vertical and that of Q make an angle `theta_2` with the vertical, then

Options

A. `theta_1 gt theta_2`
B. `theta_1 =theta_2`
C. `theta_1 lt theta_2`
D. Information insufficient

Answer

B

Explanation

The charges are different even then electric forces acting on them are always equal and opposite. Both the bobs are of same mass and hence the condition of equilibrium will remain symmetric for both the charges. The angle with the vertical will be different only when their massses are different .