What is true about the ends of permanent magnets?

The ends of permanent magnets are characterized by having a more concentrated magnetic field compared to the middle sections. This concentration of magnetic strength at the poles—often referred to as the north and south poles—means that the magnetic field lines are denser in these areas. This is why permanent magnets have noticeable attraction and repulsion effects when interacting with ferromagnetic materials or other magnets.

In contrast, the middle of the magnet exhibits a weaker magnetic field, as the field lines are more spread out in that region. Understanding this concept is crucial in various applications of magnets, such as in magnetic circuits, where the strength at the poles is vital for effective operation. The lack of magnetic properties at the ends is incorrect since they are indeed the strongest parts of the magnet.