A curve between magnetic moment and temperature of magnet is
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Magnetism of a magnet falls with rise of temperatue and becomes practically zero above curie temperature.
Needles and are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will
attract and strongly but repel
attract strongly, weakly and repel weakly
attract strongly, but repel and weakly
attract all three of them
Ferromagnetic substance has magnetic domains whereas paramagnetic substances have magnetic dipoles which get attracted to a magnetic field. Ferromagnetic material magnetised strongly in the direction of magnetism field, Hence, will be attracted. Paramagnetic substance attract weekly in the direction of field. Hence, will weakly attracted. Diamagnetic substances do not have magnetic dipole but in the presence of external magnetic field due to their orbital motion of electrons these substances are repelled. Hence, will be repelled.
Metals getting magnetised by orientation of atomic magnetic moments in external magnetic field are called
diamagnetic
paramagnetic
ferromagnetic
antimagnetic
The magnetic susceptibility for diamagnetic materials is
small and negative
small and positive
large and positive
large and negative
Among which of the following the magnetic susceptibility does not depend on the temperature?
Dia-magnetism
Para-magnetism
Ferro-magnetism
Ferrite
Diamagnetic substance do not obey Curie's law and is independent of .
Curie temperature is the temperature above which
a ferromagnetic material becomes paramagenetic
a paramagnetic material becomes diamagnetic
a ferromagnetic material becomes diamagnetic
a paramagnetic meterial becomes ferromagnetic
A material is placed in a magnetic field and it is thrown out of it. Then the material is
non-magnetic
Identify the correctly matched pair
Diamagnetic - Gadolinium
Soft ferromagnetic - Alnico
Hard ferromagnetic - Copper
Paramagnetic - Sodium
Relative permittivity and permeability of material are and , respectively. Which of the following values of these quantities are allowed for a diamagnetic material?
and .
Magnetic permeability is maximum for
diamagnetic substance
paramagnetic substance
ferromagnetic substance
All of the above
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