Question

A bar magnet has no markings to indicates its poles .How would you find out near which end is its nort pole located​

Answer 1

free suspensions will mark it as north and south

Answer 2

Answer: A freely suspended bar magnet always comes to rest in the North−South direction. The north facing end of the magnet is its north pole, and the south facing end is its south pole (as shown in the given figure). Hence, the unknown poles of a bar magnet can be marked by suspending it freely by a string.