A simple pendulum of frequency f has a metal bob. If the bob is charged negatively and is allowed to oscillate with a positively charged plate placed under it, the frequency will:

remain equal to f

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become less than f

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become more than f

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become zero

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Solution

The correct option is D become more than f
If positively charged plate is kept under negatively charged oscillating bob, it will exert a force of attraction on the bob, which will increase its frequency. Hence, option C is correct.

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A simple pendulum of frequency f has a metal bob. If the bob is charged negatively and is allowed to oscillate with a positively charged plate placed under it, the frequency will:

The correct option is D become more than fIf positively charged plate is kept under negatively charged oscillating bob, it will exert a force of attraction on the bob, which will increase its frequency. Hence, option C is correct.

The correct option is D become more than f
If positively charged plate is kept under negatively charged oscillating bob, it will exert a force of attraction on the bob, which will increase its frequency. Hence, option C is correct.