Why is repulsion a surer test of magnetism than attraction ? Describe one application of the attractive property of magnets.


Magnetism is a physical phenomenon arising from the force caused by magnets or things that produce fields that attract or repel other items, and magnetism is a physical phenomenon resulting from the force caused by magnets or objects that produce fields that attract or repel other objects.
Repulsion is the sure test for magnetism because it occurs only when two like poles of a magnet exist, whereas attraction can occur between two unlike poles of a magnet and also between a magnet and a magnetic material, which means that if two magnets are present, they will attract each other, and if one material is a magnet and the other is iron, they will also attract each other, so we cannot determine which is a magnet.
The separation of usable magnetic substances like iron and steel from trash using magnetic separation is a frequent application of magnets’ attractive feature.

Final Answer:
Magnetism is a physical phenomenon arising from the force caused by magnets or things that produce fields that attract or repel other items, and magnetism is a physical phenomenon resulting from the force caused by magnets or objects that produce fields that attract or repel other objects.
Repulsion is the sure test for magnetism because it occurs only when two like poles of a magnet exist, whereas attraction can occur between two unlike poles of a magnet and also between a magnet and a magnetic material, which means that if two magnets are present, they will attract each other, and if one material is a magnet and the other is iron, they will also attract each other, so we cannot determine which is a magnet.
The separation of usable magnetic substances like iron and steel from trash using magnetic separation is a frequent application of magnets’ attractive feature.