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A simple pendulum has a time period T. T...

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

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