1.

A simple pendulum has time period T. Charges are now fixed at the point of suspension of the pendulum and on the bob. If the pendulum continues to oscillate, its time period will now be(a) greater than T(b) equal to T(c) less than T(d) either (a) or (c) depending on whether the charges attract or repel each other

Answer»

Correct Answer is: (b) equal to T

The additional electrostatic force acts along the string. this dose not have a component in the direction of motion of the bob.



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