A diamagnetic substance is brought, one by one, near the north pole and the south pole of a bar magnet. It is:
Show Hint
- repelled by north pole and attracted by south pole
- attracted by north pole and repelled by south pole
- attracted by north pole as well as by south pole
- repelled by north pole as well as by south pole
The Correct Option is D
Solution and Explanation
A diamagnetic substance opposes an external magnetic field by generating its own opposing field, resulting in repulsion from magnets. This occurs because:
1. Diamagnetism Explained: These materials lack unpaired electrons, leading to canceled atomic magnetic moments. In an external field, they acquire an induced magnetic moment that counteracts the applied field.
2. Interaction with Poles: Because they oppose the external field, diamagnetic substances are repelled by both north and south poles. They naturally move towards regions of weaker magnetic field strength.
3. Observational Evidence: When a diamagnetic material approaches a bar magnet, a repulsive force is exerted, pushing it away from either pole.
Based on this behavior, diamagnetic materials are correctly described as: "repelled by north pole as well as by south pole".
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