a bar magnet has no marking to indicate poles. how will you find its poles without using a magnet

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Jyoti Pant answered this

We can find the poles of a bar magnet by suspending it freely by a string. 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.

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Justin Dawny answered this

take one another magnet and see wether the end of the pole is attracting then they are north and south and if they are not attracting then they are north and north or south and south..

Intelligent answered this

the power of magnet is situated on the poles you can prove this as put some pins in a container put a magnet in it shake well the container after a while you can take out the magnet and you can see that all the pins are attracted to the both end of the magnet this determines that power of magnet is stored in poles and the place where the most pins areattracte can be said as it's poles

Aman Chaudhary answered this

You have take one another magnet and see wether the end of the pole is attracting then they are north and south and if they are not attracting then they are north and north or south and south.

Pranjal Naryani answered this

Suspend the magnet and it will aligh N-S Directions as it is assumed that a giant magnet is lying deep inside the Eath with is North Pole towards Geographic South and its South Pole towards Geographic North.

Harsh Datt answered this

Afreely suspended bar magnet always comes to rest in the NorthSouth 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.