1. A cylindrical magnet has only one pole. 2. Artificial magnets were discovered in Greece. 3. Similar poles of a magnet repel each other. 4. Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Answer (1)
Let's evaluate each statement one by one to understand how magnets work:
A cylindrical magnet has only one pole.
This statement is incorrect. Every magnet, regardless of its shape, has two poles: a north pole and a south pole. In a cylindrical magnet, just like in any other magnet, you would find these two poles at opposite ends of the cylinder.
Artificial magnets were discovered in Greece.
This statement is incorrect. While natural magnets, like magnetite, were indeed discovered in the ancient Greek region of Magnesia (hence the name 'magnet'), artificial magnets are not linked to this discovery. Artificial magnets are man-made and were developed much later as technology advanced.
Similar poles of a magnet repel each other.
This statement is correct. Like poles (north-north or south-south) of magnets repel one another, while opposite poles (north-south) attract.
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
This statement is incorrect. The strongest magnetic field in a bar magnet occurs at the poles, so iron filings are mostly attracted to the ends of the magnet, not the middle.
Understanding these properties is crucial for studying magnetism, as it helps explain how and why magnets interact with each other and with materials like iron.
