1.

If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material be denoted by mu_d, mu_p and murespectively, then

Answer»

`mu_d NE0 and mu_f =0`
`mu_p = 0 and mu_f = 0 `
`mu_d = 0 and mu_p ne 0`
`mu_d ne 0 and mu_p = 0 `

SOLUTION :For a DIAMAGNETIC material `mu_d =0` but for a PARAMAGNETIC material, `mu_p =0` and for a ferromagnetic material `nu_f ne 0`


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