Suspend the bar magnet freely using a string. The magnet will align itself with the Earth’s magnetic field. The end pointing towards the Earth’s geographic north is the magnet’s north pole, as opposites attract.
A bar magnet has no markings to indicate its poles. How would you find out near which end its North pole is located without using another magnet?
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To identify the north pole of an unmarked bar magnet, suspend it freely by tying a string around its center. The magnet will rotate and settle in alignment with the Earth’s magnetic field. The end that points towards the Earth’s geographic north is the north pole of the magnet because a magnet’s north pole is naturally attracted to the Earth’s magnetic north, which corresponds to the Earth’s geographic north. This method uses Earth’s magnetic field as a reference.
For more CBSE Class 6 Science Curiosity Chapter 4 Exploring Magnets Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-4/