The relative magnetic permeability of a substance X is slightly less than unity and that of substanc

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The relative magnetic permeability of a substance X is slightly less than unity and
that of substance Y is slightly more than unity, then
(a) X is paramagnetic and Y is ferromagnetic
(b) X is diamagnetic and Y is ferromagnetic
(c) X and Y both are paramagnetic
(d) X is diamagnetic and Y is paramagnetic