What happens when the small bar magnet kept on the glass and iron filings sprinkled on glass ?

Explanation

When iron filings sprinkled, the arrangement of iron filing is as below :

The pattern suggests that :
(i) The patterns of the iron filings suggests that the magnet has two poles similar to the positive and negative charge of an electric dipole.
One pole is designated the north pole and the other the south pole.
(ii) When suspended freely, these poles point towards the geographic north and south poles respectively.
(iii) A similar pattern of iron filings is observed around a current carrying solenoid.