Question

Why does a compass needle get deflected when brought near
a bar magnet?

Answer 1

A compass needle attract to the natural magnetic poles of the earth

bar magnet - although much weaker than the Earth's magnetic strength

Answer 2

HI

A compass needle is a small bar magnet with one north and the other south pole. When a magnet is brought near the compass, the north pole of the compass gets attracted by the south pole of the magnet and vice-versa.Therefore, the compass needle gets deflected when brought near a bar magnet.

Hope it proved to be beneficial....