Question

A straight bar magnet is initially 4 cm long, with the north pole on the right and the south pole on the left. If you cut the magnet in half, the right half will:

A. Still contain a north pole on the right and a new south pole on the left.


B. Only contain a south pole.


C. Only contain a north pole.

Answer 1

The length of the bar magnet 4cm, if we cut into half
the right half will have same poles.
Cutting the bar magnet in half produces two weaker but still complete magnets, each with a north pole and a south pole. No matter how small magnets are cut, even down to microscopic size, each piece remains a complete magnet with two poles.
So always magnets pair of poles. there is no existence of unipole.
Therefore the option is (A)