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प्रश्न
Give the properties of dia/para/ferromagnetic materials.
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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 |
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संबंधित प्रश्न
Define the following term:
Ferromagnetism
Write the type of magnetism observed when the magnetic moments are aligned in parallel and anti-parallel directions in unequal numbers.
What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic. Justify your answer.
Give reason for the following :
Sulphur in vapour state shows paramagnetic behaviour.
What is magnetic susceptibility?
Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: The electrons change their spin on heating.
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.
Give a reason for the following:
Cu+2 salts are paramagnetic, while Cu+ salts are diamagnetic.
The metal complex ion that is paramagnetic is ______.
(Atomic number of Fe = 26, Cu = 29, Co = 27 and Ni = 28)
