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Question

If a bar magnet is placed on a plastic plate with pins spread on it, then________.



A

None of these

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B

Pins stick all around the magnet 

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C

Pins stick at the middle of the magnet

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D

Pins stick at the ends of the magnet

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Solution

The correct option is B

None of these


When a bar magnet is brought near iron fillings, the amount of iron fillings that stick to the magnet depends on the strength of the magnet. The magnetism of a bar magnet is maximum at the poles and minimum in the middle. Thus, maximum iron fillings will stick at the two ends of the magnet and minimum in the middle.


Physics

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