Electricity and Magnetism — Question 7

If a bar magnet is broken at the middle in two parts, each part is found to be a magnet. Each part has the property to attract small iron pieces. Each part when suspended freely, rests in north-south direction. This shows that new poles are formed at each broken parts. If these parts are broken again and again, still each part will be a complete magnet with north and south poles. This shows that poles exists in pairs.