A domain in ferromagnetic iron in the form of cube is having 
atoms. If the side length of this domain is 
and each atom has a dipole moment of 
, then magnetisation of domain is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
The volume of the cubic domain is,
Number of atoms in domain, (N) 
atoms
Since each iron atom has a dipole moment (m)
Now the consequent magnetization,
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