GEOLOGY

Detailed explanation-1: -Magnets come in different shapes and sizes and not only in form of a rectangular bar. There are cylindrical magnets, U-shaped magnets, Ring-shaped magnets and many more. In fact, a magnet can be made in any shape.

Detailed explanation-2: -They come in different sizes, shapes, materials and strengths. They all generate a force called magnetism. This force is what allows them to attract or stick to certain metals. Yet some magnets can’t even hold a piece of paper to a refrigerator, while others can lift cars high up into the air.

Detailed explanation-3: -The correct option is D Magnetic poles exert maximum attraction.

Detailed explanation-4: -A magnet’s strength is not only determined by its size, but also by the material of which the magnet is made and the number of “tiny magnets” lined up in the magnet. A larger magnet will have a stronger magnetic field than a smaller mag-net made of the same material.

Detailed explanation-5: -Hence, artificial magnets can be made in any size or shape. Q. Any object can be made a magnet if it is brought near or in contact with a very strong magnet.