Advertisements
Advertisements
प्रश्न
Give the properties of dia/para/ferromagnetic materials.
Advertisements
उत्तर
| Properties | Dia | Para | Ferro |
| Magnetic susceptibility | Negative | Positive and small | Positive and large |
| Relative permeability | Slightly less than unity | Greater than unity | Large |
| Nature of magnetic field lines | Repelled or expelled from diamagnetic materials | Attracted into the paramagnetic materials | Strongly attracted to the ferromagnetic materials |
| Susceptibility | Temperature independent. | Inversely proportional to temperature. | Inversely proportional to temperature. |
| Examples | Bismuth, copper, and water, etc. | Aluminum, platinum, chromium, etc. | Iron, Nickel, and Cobalt |
APPEARS IN
संबंधित प्रश्न
Give reasons:Ferrimagnetic substances show better magnetism than antiferromagnetic substances.
Out of [CoF6]3- and [Co(en)3]3+, which one complex is
(i) paramagnetic
(ii) more stable
(iii) inner orbital complex and
(iv) high spin complex
(Atomic no. of Co = 27)
What happens to the domains in a ferromagnetic material in the presence of external magnetic field?
All those atoms or molecules which have an odd number of electrons are
Fe3O4 is ____________.
Which of the following statements are correct?
(i) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic.
(ii) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic.
(iii) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other.
(iv) In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.
Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T) have different properties of the following, which property best matches for the type of magnet required ?
The correct order of bond strength is ______.
The susceptibility of a paramagnetic material is 99. The permeability of the material in Wb/A-m is ______.
[permeability of the free space μ0 = 4π × 10-7 Wb/A - m]
