Question

49. Example for ferro-magnetic materials
(A) super conductors
(B) alkali metals
(C) transition metals
(D) ferrites​

Answer 1

Answer:

C transition metals because in others the line of force of attraction tend to crowd into the specimen is negligible (but at higher studies some of they shows ferro properties)

Answer 2

Ferrites are examples of ferromagnetic materials.

• Ferromagnetic materials exhibit strong magnetism.
• They become permanent magnets when placed in a magnetic field.
• When an external field is applied, they align themselves in the direction of the magnetic field.

Ferrites belong to the family of ferromagnetic materials but they do not exhibit all the properties of ferromagnets.

• Ferrites have opposite spins instead of parallel spins in ferromagnets.
• So their magnetization is lesser than ferromagnets.
• They have very high magnetic permeability.
• So can store very strong magnetic fields even more than iron.
• Therefore they are also known as ferromagnetic ceramic materials.  or ceramic magnets.
• They are widely used in electronic industries.