Magnetic field inside substance is B and that in free space is \( B...

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Magnetic field inside substance is B and that in free space is \( B_{0} \), then for \( BB_{0} \), the substance is
(1) a paramagnetic
(2) a diamagnetic
(3) a ferromagnetic
(4) (1) and (2) both are possible
\( \mathrm{P} \)
W
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