Question

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

• A. None of these
• B. Pins stick all around the magnet
• C. Pins stick at the middle of the magnet
• D. Pins stick at the ends of the magnet

Answer 1

The correct option is A

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.