DISTANCE EDUCATION
M.Sc. (Physics) DEGREE EXAMINATION, DECEMBER 2017.
MATERIALS SCIENCE
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
× 20 100)
1. Write a note on elastic behaviour of materials.
What is creep? Explain.
Explain in detail about corrosion and oxidation.
How it is controlled?
2. Explain about the viscoelastic behaviour of
materials.
Write a note on addition and condensation of
polymerization.
What is a polymer? Describe their important
characteristics and mention their uses.
3. Write the principle and the properties of laser.
Explain in detail about the optical resonator.
Describe the construction and working of Nd-YAG
laser.
4. Discuss the Schawlow-Townes condition for the line
width of a laser.
Explain in detail about Gas lasers and dye lasers.
Mention some important applications of lasers.
Sub. Code
25
DE-2960
2
Ws6
5. What is meant by Pocket's effect? Give its theory.
Write in detail about second harmonic generator.
Write a note on electro optical materials.
6. Discuss the production and measurement of high
vacuum.
Explain in detail about the thermal evaporation
method for thin film preparation. Also explain the
thickness of the thin film is measured using quartz
crystal method.
7. Describe the principle and working of Pirani and
Penning gauges.
Discuss about the various sputtering methods and
also mention their advantages.
8. Explain in detail about silverion conductors and
copper ion conductors.
Write in detail about fuel cells.
Write a brief note on electrochronic display.
————————