M.Sc. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2017.
Third Semester
Physics
Paper II ANALYTICAL TECHNIQUES
2 20732-A
Time 3 Hours Max. Marks 70
SECTION — A
Answer any FIVE questions. 6 30 Marks)
All questions carry equal marks.
1. Define reciprocal lattice and obtain the relation between direct and reciprocal
lattice.
2. Briefly explain the working of proportional counter.
3. Explain the magnetic moment of an electron.
4. Write a note on Lamb Mossbauer factor.
5. Explain the spin-lattice and spin-spin couplings in NMR.
6. Explain the working of CW oscillator.
7. Briefly give the advantages of photo acoustic spectroscopy.
8. Explain the specimen interactions in electron spectroscopy.
SECTION — B
Answer any FOUR questions. 10 40 Marks)
All questions carry equal marks.
9. Describe in detail the powder method in the determination of crystal
structure.
Or
Describe the principle and working of single crystal x-ray diffractometer.

10. Explain the spin-spin and spin-lattice interactions and explain the
significance of factor in ESR.
Or
Explain the recoilless emission and absorption in Mossbauer spectroscopy
and discuss the analysis of nuclides with Mossbauer spectra.
11. Explain the theory of NMR and explain the relaxation mechanisms for
spin 2
1 nuclei.
Or
Describe the instrumentation and working of NQR.
12. Explain the basic principle and instrumentation of photoelectron spectroscopy.
Or
Describe the principle and working of Scanning Electron Microscopy with a
neat ray diagram.
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