question_answer

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)            \[{{\mu }_{d}}\ne \text{ 0  and }{{\mu }_{p}}=\text{ 0}\]