Total No. of Questions [Total No. of Pages 2
M.Sc. (Second) DEGREE EXAMINATION, MAY 2018
Second Year
PHYSICS
Solid State Physics I
Time 3 Hours Maximum Marks 70
Answer any Five of the following
All questions carry equal marks
Q1) Write a note on crystal point groups and space groups.
Discuss the Lane interpretation of x ray diffraction by crystals.
Q2) Obtain the relation between c and and c*.
Discuss the measurement of diffraction patterns of crystals.
Q3) What are primary and secondary bonds? Explain with examples.
Discuss the Normal modes of one dimensional mono atomic chain.
Q4) Explain the general theory of Harmonic approximation.
Explain the measurement of phonon dispersion by inelastic neutron scattering.
Q5) Obtain an expression for heat capacity.
Explain an harmonic effects in solids.
Q6) Discuss indetail the motion of an electron in a periodic potential using lenning penry
model.
Q7) Explain nearly free electron model.
Distinguish between insulators, semiconductors and metals based on band
theory of solids.
Q8) Obtain an expression for carrier density in intrinsic semiconductor.
State and explain Hall effect.
Q9) Write notes on any two of the following
Bragg's law in x ray diffraction.
Quartization of lattice vibrations.
Wave mechanical interpretation of energy bands.
Magneto resistance.