Anna University
PH2161 Engineering Physics - II Expected Part B Questions May/June 2013
1)Write the postulates of classical free electron theory.
2)Derive the expression for electrical and thermal conductivity of metals.
3)Derive expression for density of states.
4)Explain direct and indirect band gap semiconductor.
5)Derive expression for density of holes in an intrinsic semiconductor.
6)Derive an expression for carrier concentration in an intrinsic semiconductor.
7)Explain doping.
8)What is meant by hall effect.
9)Derive an expression for hall coefficient of n type semiconductor.
10)Explain the properties of ferromagnetic materials.
11) Explain ferrites in detail.
12)Explain BCS theory.
13)Explain the properties of semiconductor.
14)Explain magnetic levitation.
15)Write detail about polarisation mechanism.
16)Derive classius mosotti equation.
17)Explain metallic glasses and its preparation methods.
18)Explain the properties of metallic glasses.
19)Explain SMA with its characteristics.
20)Explain carbon nano tubes with its making process.