If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is

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1. **Definition:** Diamagnetic substances are those that have a tendency to move from the stronger to the weaker part of an external magnetic field .
2. **Interaction:** Unlike ferromagnetic materials which are attracted, diamagnetic substances are feebly repelled by a magnet. This repulsion occurs regardless of the polarity of the magnetic field because the induced magnetic moment in a diamagnet is always directed opposite to the external field (Lenz's Law analog for atomic orbitals) .
3. **Conclusion:** Since the magnetic field is strong near both the North and South poles of a bar magnet, a diamagnetic substance will be repelled by the strong field at both poles.

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