DISTANCE EDUCATION
M.Sc. (Physics) DEGREE EXAMINATION, MAY 2016.
SPECTROSCOPY
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
20 100)
1. Discuss valence bond theory.
Explain the Heitler London theory for the hydrogen
molecule and discuss the exchange interaction.
2. Find the eigen values and eigen functions of a rigid
rotator.
State mutual exclusion principle.
Explain in detail the pure rotational Raman
spectra.
3. State and explain any five applications of Raman
spectroscopy.
Explain the study of quadrupole hyper fine
interaction in microwave spectroscopy.
Explain hyper Raman effect.
4. Describe the vibrational spectra of polyatomic
molecule.
Explain Franck Condon principle in detail.
Sub. Code
21
DE-3836
2
Sp 1
5. What is multiphoton absorption? Explain.
Explain stimulated and inverse Raman effect.
Discuss coherent anti-stoke's Raman scattering.
6. Write the application of mossbauer spectroscopy for
crystal symmetry and molecular structures.
Explain dipole-dipole interaction and spin lattice
interactions.
Explain how the structure of molecules are
determined using IR and Raman spectroscopy.
7. Explain the theory of chemical shift in NMR.
What is the principle used in NQR spectroscopy and
write its applications.
Compare NMR and ESR spectroscopy.
8. Explain with a block diagram an experimental
study of mossbauer effect.
Write a note on disassociation.
Describe the factors which are responsible for
hyperfine structure in ESR spectra.