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A uniform magnetic field gets modified a...

A uniform magnetic field gets modified as shown, when two spectimens X and Y are placed in it.
i. Identify the two specimens X and Y .
ii. State the reason for the behaviour f the field lines in X and Y.

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i. X is a diamagnetic substance.
Y is a paramagnetic substance
ii. When a diamagnetic bar is placed in an external field, the field lines are repelled or
`" "` When a paramagnetic bar is placed in an external field , the field lines get concentrated inside the material and the field is increased.
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