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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
`T=2pisqrt(l//g) ` , since `g_("eff")gt g`
Hence `T darr`
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