Question

What happens to ferromagnetic substances on heating beyond the Curie temperature?

Options

• They get converted into paramagnetic materials

• They get converted into diamagnetic substances

• They become strongly magnetised in the opposite direction

• Their relative permeability becomes much greater than 1

Answer 1

Ferromagnetic substances get converted into paramagnetic materials on heating beyond the Curie temperature. Paramagnetic materials are feebly magnetised in the direction of the applied field.