When the temperature of a magnetic material decreases, the magnetization
decreases in a diamagnetic material
decreases in a paramagnetic material
decreases in a ferromagnetic material
remains the same in a diamagnetic material
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When the temperature of a magnetic material decreases, the magnetization remains the same in a diamagnetic material.
A ferromagnetic material is heated above its curie temperature. Which one is a correct statement?
Ferromagnetic domains are perfectly arranged
Ferromagnetic domains become random
Ferromagnetic domains are not influenced
Ferromagnetic material changes into diamagnetic material
Beyond curie temperature, ferormagnetic material turns into paramagnetic material, as if ferromagnetic domains become random.
According to Curie's law,
Susceptibility of ferromagnetic substance is
0
1
If the susceptibility of dia, para and ferromagnetic materials are respectively, then
For diamagnetic substance is small negative
For paramagnetic substances is small and positive to
For ferromagnetic substanes is very large to
The magnetic susceptibility of a paramagnetic substances at is 0.0060 , then its value
at will be
0.0030
0.0120
0.0180
0.0045
As magnetic susceptibility , therefore
The susceptibility of a paramagnetic material is 99 . The permeability of the material in is :
[Permeability of free space ]
If a paramagnetic liquid is placed in a watch glass, resting on the pole pieces, the liquid accumulates where the field is
zero
weak
strong
None of these
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