Question

how will you experimentally show that there are two regions in a magnet where its magnetic strength is concentrated? 

Answer 1

Thanks for asking the question.
1.Put some iron fillings and sand on a piece of paper and bring a magnet near it. Magnet will attract the iron fillings towards it. 
2. Tie a magnet with a rope and put some iron in a piece of paper. The magnet will be attracted towards the iron.
This experiment can be performed only with the substances that can be easily attracted to the magnet like metal, iron, etc.
Hope it helps.