Define magnetisation of a sample.

A paramagnetic gas consists of atoms each with a dipole moment of 1.5 xx 10^23 J//T . Temperature of the gas Is 27^@C and Its number density is 2 xx 10^26 m^-3 . What is the maximum magnetisation of the sample possible when placed In an external field ?

Would the maximum possible magnetisation of a paramagnetic substance be of the same order of magnitude as the magnetisation of a ferromagnet ?

Why does a paramagnetic sample display greater magnetisation ( for the same magnetising field ) when cooled ?

Explain qualitatively on the basis of domain picture the lireversibility in the magnetisation curve of a ferromagnet.

Define metabolism.

What is meant by activity of a sample?

Define ampere.

Define BOD.