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A simple pendulum of period T has a meta...

A simple pendulum of period `T` has a metal bob which is negatively charged. If it is allowed to oscillate above a positively charged metal plate, its period will

A

remains equal to `T`

B

less than `T`

C

greater than `T`

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
B
When a negatively charged pendulum oscillates over a positively charged plate, then effective value of `g` increase so according to `T= 2pi sqrt((l)/(g)), T` decreases.
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Knowledge Check

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