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A ball of superconducting material is di...

A ball of superconducting material is dipped in liquid nitrogen and placed near a bar magnet.
(i) In which direction will it move ?
(ii) What will be the direction of it's magnetic moment ?

Text Solution

Verified by Experts

We know that a superconducting material and nitrogen both are diamagnetic in nature.
When a diamagnetic material is dipped in liquid nitrogen, it again behave as a diamagnetic material. When this diamagnetic material is placed near a bar magnet, it will be feebly magnetised opposite to the direction of magnetising field. Hence,
(i) ball experiences repulsion and move away from the magnet.
(ii) Its magnetic moment is from left to right and it is opposite to the direction of magnetic field.
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