In a permanent magnet at room temperature,
(a) Magnetic moment of each molecule is zero
(b) The individual molecules have non-zero magnetic moment which are all perfectly aligned
(c) Domains are partially aligned
(d) Domains are all perfectly aligned
In a permanent magnet at room temperature,
(a) Magnetic moment of each molecule is zero
(b) The individual molecules have non-zero magnetic moment which are all perfectly aligned
(c) Domains are partially aligned
(d) Domains are all perfectly aligned
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
Answer- (d)
Explanation- the individual atoms in a ferromagnetic material possess dipole moment as in a paramagnetic material.
However they interact with one another in such a way that they spontaneously align themselves in a common direction over a microscopic volumes called domain. Thus they align perfectly.
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