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A simple pendulum has a metal bob, which is negatively charged. If it is allowed to oscillate above a positively charged metallic plate, then its time period will
-
- increase
- decrease
- become zero
- remain the same
Correct Option: B
| We know that the time period (T) = 2π |  |  | ∝ |
| g' = geffective | |||
| g' | √g' |
Since the negatively charged bob is attracted by the positively charged plate, therefore acceleration due to gravity will increase and time period will decrease.
