Question

___ is the surest test for magnetism.

• A. Repulsion
• B. No movement
• C. Attraction
• D. Adhesiveness

Answer 1

The correct option is A

Repulsion

Attraction can occur in the case of two magnets (with opposite poles brought together) as well as between a magnet and ferrous objects such as iron. Therefore if both the pieces attract each other, they may be magnets or one may be the magnet and other may be a ferrous material. Whereas, repulsion is possible only in case of two magnets (with same poles brought together). Therefore repulsion is a true test for magnetism.