1.

Two identical bars, one of paramagnetic material and other of diamagnetic material are kept in a uniform external magnetic field parallel to it. Draw diagrammatically the modifications in the magnetic field pattern in each case.

Answer»

SOLUTION :In PARAMAGNETIC SUBSTANCE more FIELD lines pass on placing the substance in a magnetic field because RELATIVE permeability `mu_(r)` of it is greater than 1 and the substance experiences a feeble force of attraction.

In diamagnetic substance lesser number of field lines pass through the substance when placed in a magnetic field because for it `mu_(r) lt 1` and the substance experiences a feeble force of repulsion.


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