The curve representing the relationship between the magnetic moment $(M)$ and the temperature $(T)$ of a ferromagnetic material is:

$A$ proton has spin and magnetic moment just like an electron. Why then is its effect neglected in the magnetism of materials?

Which of the following figures best represents the variation of magnetic susceptibility $(\chi)$ with temperature for a diamagnetic substance?

$A$ thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on,the diamagnetic rod is pushed up,out of the horizontal magnetic field. Hence,the rod gains gravitational potential energy. The work required to do this comes from:

$A$ frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

The variation of magnetic susceptibility $(\chi )$ with temperature for a diamagnetic substance is best represented by: