GEOLOGY

Detailed explanation-1: -When two magnets are placed with their like poles facing each other, the lines of force are in opposite directions and hence like poles repel each other. When the unlike poles of a bar magnet face each other the magnetic lines of force are in the same direction and hence unlike poles attract each other.

Detailed explanation-2: -Unlike poles of different magnets attract each other; like poles repel each other. The magnetic force between a pole of one long bar magnet and that of another was described by an inverse square law as early as 1750.

Detailed explanation-3: -Suspend magnet A with a silk thread from support, it will come to rest in north-south direction. Bring the north pole of magnet B close to the north pole of magnet A. We will observe that magnet A moves away from magnet B. This shows that the like poles repel each other.

Detailed explanation-4: -A magnet has two ends called poles; one end is the north pole and the other is the south pole. A north pole will attract a south pole; the magnets pull on each other. But the two north poles will push each other away. We say the magnets repel each other.

Detailed explanation-5: -Hence, Unlike poles attract, while like poles repel each other.