problem1) Answer all the problems:
i) What is regenerative cooling?
ii) Prove that C^{2}_{m} = (2Kt/m).
iii) Describe thermal conduction.
iv) Derive the relation between entropy and probability.
v) Describe thermionic emission.
problem2) Using energy distribution function. Prove that mean kinetic energy of a system is always proportional to temperature.
problem3) What are postulates of quantum physics? Mention plank distribution law.
problem4) Describe following terms:
a) Partition function
b) Heat capacity
c) Enthalpy
d) Helmboltz free energy
e) Gibbs free energy