UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - SOLID STATE PHYSICS - 7BPHE2C - SLOT II

 

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.