Q.

Time period of a simple pendulum with charged bob with charge (+Q) oscillating in uniform acceleration due to gravity is ‘T’. If a point charge (-q) is now placed at point of suspension its time period of oscillation

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a

remains constant

b

becomes  

c

increase

d

decrease

answer is C.

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Detailed Solution

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Time period remains same as the Coulomb's force is acting along the string increases the tension doesn't change the restoring force.

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