Question

when a magnet cut into two parts then each become complet magnet ?

Answer 1

yes it,s true it become complete magnet

Answer 2

You can think of a magnet as a bundle of tiny magnets, called magneticdomains, that are jammed together.Each one reinforces the magneticfields of the others. Each one has a tiny north and south pole. If you cutone in half, the newly cut faces willbecome the new north or south poles of the smaller pieces.