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If the magnetic dipole moment of an atom...

If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by `mu_(d) , mu_(p) and mu_(f)` respectively , then

A

`u _(d) =0 and mu_(p) ne 0`

B

`mu_(d) ne 0 and mu_(p) =0`

C

`mu_(p) =0 and mu_(f) ne 0`

D

`mu_(d) ne 0 and mu_(t) ne 0`

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The correct Answer is:
A
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