1.

If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material denoted by \[{{\mu }_{d}},\,{{\mu }_{p}},\,{{\mu }_{f}}\]respectively then         [CBSE PMT 2005]

A.            \[{{\mu }_{d}}\ne \text{ 0  and }{{\mu }_{f}}\ne \text{ 0}\]              
B.            \[{{\mu }_{p}}=\text{ 0  and }{{\mu }_{f}}\ne \text{ 0}\]
C.  \[{{\mu }_{d}}=\text{ 0  and }{{\mu }_{p}}\ne \text{ 0}\]             
D.            \[{{\mu }_{d}}\ne \text{ 0  and }{{\mu }_{p}}=\text{ 0}\]
Answer» D.            \[{{\mu }_{d}}\ne \text{ 0  and }{{\mu }_{p}}=\text{ 0}\]


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