Magnetic permeability is maximum for ____.
Diamagnetic substance
Paramagnetic substance
Ferromagnetic substance
All of the above
If a diamagnetic solution is poured into a U-tube and one arm of this U-tube placed between the poles of a strong magnet with the meniscus in a line with the field, then the level of the solution is ____.
Rise
Fall
Oscillate slowly
Remain as such
A small rod of bismuth is suspended freely between the poles of a strong electromagnet. It is found to arrange itself at right angles to the magnetic field. This observation establishes that bismuth is ____.
Diamagnetic
Paramagnetic
Ferri-magnetic
Antiferro-magnetic
A frog can be deviated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as ____.
Paramagnetic
Diamagnetic
Ferromagnetic
Antiferromagnetic
The given figure represents a material which is?
Paramagnetic
Diamagnetic
Ferromagnetic
None of the above
For an isotropic medium B, (, H and M are related as (where and M have their usual meaning in the context of magnetic material ____.
The magnetic susceptibility of any paramagnetic material changes with absolute temperature T as ____.
Directly proportional to T
Remains constant
Inversely proportional to T
Exponentially decaying with T
When a piece of a ferromagnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is ____.
1
2
3
4
If a ferromagnetic material is inserted in a current carrying solenoid, the magnetic field of solenoid ____.
Largely increases
Slightly increases
Largely decreases
Slightly decreases
Among the following properties describing diamagnetism identify the property that is wrongly stated ____.
Diamagnetic material do not have permanent magnetic moment
Diamagnetism is explained in terms of electromagnetic induction
Diamagnetic materials have a small positive susceptibility
The magnetic moment of individual electrons neutralize each other