A bar magnet is cut into two equal halves parallel to its magnetic axis. The physical quantity that remains unchanged is :

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MCQ (Single)Magnetic Field of Bar MagnetCBSE PYQ

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A bar magnet of pole strength (m) and magnetic moment (M) is cut perpendicular to its axis in two equal halves. The new pole strength (m′) and magnetic moment (M′) of each part are respectively :

MCQ (Single)Magnetic Field of Bar Magnet