Describe a simple experiment to illustrate that like poles of two magnets repel each other while unlike poles attract.

1. Take two bar magnets A and B.
2. Suspend one magnet A with a silk thread from a support so that it is free to swing.
3. The magnet A will come to rest in the north-south direction. The north pole of the magnet A is in north direction and its south pole is in the south direction.
4. Now hold the other magnet B in your hand and bring its north pole near the north pole of the suspended magnet A without touching the magnet.

We will observe that two poles repel each other.

5. Now bring the south pole of the magnet B near the north pole of the suspended magnet A without touching it.

We will observe that the two poles attract each other.

The above experiment shows that like poles repel and unlike poles attract each other.