ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
FIFTH
SEMESTER SLOT – II
SOLID STATE PHYSICS - 7BPHE2C
Total Marks: 25 Time: 1.0 Hr
SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks
ANSWER ALL THE QUESTIONS
1. Write
note on physical properties of metals.
2. Define
polarization.
3. What is
dielectric breakdown?
4. Define
dielectric constant of an isotropic medium.
5. List types
of semiconductors.
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Distinguish
between electrical and thermal conductivities.
7. Explain ionic
and orientation polarization.
8. Explain
Clausius-Mossotti relation.
9. Distinguish
between intrinsic and extrinsic semiconductors with suitable examples.
10. Describe
any two applications of dielectric materials.