A small rod of bismuth is suspended freely between the poles of a strong electromagnet. It is found to arrange itself at right angles to the magnetic field. This observation establishes that bismuth is :

Diamagnetic

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Paramagnetic

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Ferro-magnetic

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Antiferro-magnetic

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Solution

The correct option is A Diamagnetic
when a bar arranges itself perpendicular to the magnetic field, it is diamagnetic in nature
therefore bismuth is diamagnetic

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