M.Sc. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2017
Third Semester
Physics
Paper II ANALYTICAL TECHNIQUES

2 20732
Time 3 Hours Max. Marks 100
SECTION — A
Answer any FIVE questions. 8 40 Marks)
Each question carries 8 marks.
1. Explain the concept of point groups and space groups.
2. Explain the basic principle and applications of electron diffraction.
3. Explain the hyperfine interactions in ESR.
4. What do you mean by recoilless emission and absorption? explain.
5. Explain the nuclear spin and magnetic moment in NMR.
6. Write a note on pulse RF detection.
7. Briefly give the applications of photo acoustic spectroscopy.
8. Explain what type of information you may get from the SEM.
SECTION — B
Answer ALL questions. 15 60 Marks)
Each question carries 15 marks.
9. Define reciprocal lattice and Describe the Laue diffraction method in the
determination of crystal structure.
Or
Describe the principle and working of single crystal x-ray diffractometer with
neat circuit diagram.

10. With a neat block diagram explain the principle, instrumentation and
operation of ESR.
Or
What is Mossbauer effect? Discuss the method to determine the states of
nuclei using Mossbauer spectra.
11. Give the quantum description of NMR and discuss the spin-lattice and
spin-spin couplings.
Or
Explain the basic concepts of NQR spectra and describe the working of super
generative oscillator.
12. Explain the basic principle and instrumentation of x-ray fluorescence
spectroscopy.
Or
Describe the principle and working of TEM with a neat ray diagram.
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