Explain ferromagnetic and diamagnetic substances.

With the help of electron spins, clearly distinguish between Ferromagnetic, Antiferromagnetic and Ferrimagnetic substances.

Needles N_(1) , N_(2), and N_(3) are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively . A magnet when brought close to them will

Assertion : On heating ferromagnetic or ferromagnetic substance , they become paramagnetic Reason :The electrons change their spin on heating

Assertion : On heating ferromagnetic or ferromagnetic substance , they become paramagnetic Reason :The electrons change their spin on heating

Depict the behaviour of magnetic field lines near(i) diamagnetic and (ii) paramagnetic substances. Justify, giving reasons.

Can we have magnetic hysterisis in paramagnetic or diamagnetic substances?

Show diagrammatically the behaviour of magnetic field lines in the presence of : (i) Paramagnetic and (ii) Diamagnetic substance, How does one explain this distinguishing feature ?

The magnetic moment of a diamagnetic substance is

which of the following statements are correct ? (a)Ferrimagnetic substance lose ferrimagnetism on heating and become paramagnetic (b)Ferrimagnetic substance do not lose ferrimagnetism on heating and Remain ferromagnetic (c)Antiferromgnetic substance have domain structures similar to ferromagnetic substance and their magnetic moment are not cancelled by each other (d)Antiferromagnetic substance have domain structures similar to ferromagnetic substance and their magnetic moment are not cancelled by each other