M.Sc. DEGREE EXAMINATION, 2008
(PHYSICS)
(SECOND YEAR)
(PAPER-VIII)
220. SOLID STATE PHYSICS AND MATERIALS SCIENCE
(Revised Regulations)
(Including Lateral Entry)
2nd June
Time: 3 Hours
Maximum: 100 Marks
SECTION-A (5×4=20)
Answer any FIVE questions
All questions carry equal marks
1. Describe the crystal structure of cubic zinc sulphide.
2. Show that 5-fold rotation symmetry is not possible in point group.
3. What is Hall Effect? Obtain an expression for the Hall Co-efficient of a material.
4. Discuss the energy bands of a metal.
5. What is Tunneling? Discuss single particle tunnelling in super conductors.
6. Explain ‘Flux quantisation’ and ‘persistent current’ in a super conducting ring.
7. State and explain the Meissner effect.
8. Define a polymer. Discuss briefly, the mechanisms of polymerization.
SECTION-B (5×16=80)
Answer any FIVE questions
All questions carry equal marks
9. a) Explain point defects, surface defects, grain boundaries and dislocations in crystals.
b) Explain Miller’s indices with an example.
10. With suitable diagrams and necessary theory explain the De Hass Van Alphen effect.
11. a) Explain how thermodynamics is employed to study the superconductivity transition.
b) Write a note on Hall Effect in semi conductors.
12. a) What is Ferro electricity? Discuss ferroelectric classifications and the general properties with dipole theory.
b) Write a note on “excitation” and emission of luminescence.
13. a) Explain how thermodynamics is employed to study the super conductivity transition.
b) Explain thermodynamics of Ferro electric transitions.
14. a) Discuss the mechanism of photoconductivity and deduce an expression for the gain factor of a photo conductor.
b) Distinguish between thermoluminescence and electroluminescence.
15. a) Describe any one of the methods to grow a single crystal from melt.
b) Explain briefly, the various electrical and optical properties of thin films.
16. Write short notes on:
a) Reciprocal lattice
b) A.C.Josephson Effect.
c) Type-II super conductors
(PHYSICS)
(SECOND YEAR)
(PAPER-VIII)
220. SOLID STATE PHYSICS AND MATERIALS SCIENCE
(Revised Regulations)
(Including Lateral Entry)
2nd June
Time: 3 Hours
Maximum: 100 Marks
SECTION-A (5×4=20)
Answer any FIVE questions
All questions carry equal marks
1. Describe the crystal structure of cubic zinc sulphide.
2. Show that 5-fold rotation symmetry is not possible in point group.
3. What is Hall Effect? Obtain an expression for the Hall Co-efficient of a material.
4. Discuss the energy bands of a metal.
5. What is Tunneling? Discuss single particle tunnelling in super conductors.
6. Explain ‘Flux quantisation’ and ‘persistent current’ in a super conducting ring.
7. State and explain the Meissner effect.
8. Define a polymer. Discuss briefly, the mechanisms of polymerization.
SECTION-B (5×16=80)
Answer any FIVE questions
All questions carry equal marks
9. a) Explain point defects, surface defects, grain boundaries and dislocations in crystals.
b) Explain Miller’s indices with an example.
10. With suitable diagrams and necessary theory explain the De Hass Van Alphen effect.
11. a) Explain how thermodynamics is employed to study the superconductivity transition.
b) Write a note on Hall Effect in semi conductors.
12. a) What is Ferro electricity? Discuss ferroelectric classifications and the general properties with dipole theory.
b) Write a note on “excitation” and emission of luminescence.
13. a) Explain how thermodynamics is employed to study the super conductivity transition.
b) Explain thermodynamics of Ferro electric transitions.
14. a) Discuss the mechanism of photoconductivity and deduce an expression for the gain factor of a photo conductor.
b) Distinguish between thermoluminescence and electroluminescence.
15. a) Describe any one of the methods to grow a single crystal from melt.
b) Explain briefly, the various electrical and optical properties of thin films.
16. Write short notes on:
a) Reciprocal lattice
b) A.C.Josephson Effect.
c) Type-II super conductors