Friday, May 29, 2015

BE CSE 4ET203A Applied Physics – II Sathyabama University December 2010

SATHYABAMA UNIVERSITY

(Established under section 3 of UGC Act, 1956)

Course & Branch: B.E-CSE

Title of the Paper: Applied Physics – II Max. Marks: 80

Sub. Code: 4ET203A Time: 3 Hours

Date: 10/12/2010 Session: AN

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PART - A (10 X 2 = 20)

Answer ALL the Questions

1. State Wiedemann-Franz law.

2. What are AC and DC Josephson’s effects?

3. Give the origin of energy bands in solids.

4. Distinguish between LED and LCD.

5. How are magnetic materials classified?

6. What is meant by domain in ferromagnetic material?

7. What is 3-D profiling?

8. Draw the block diagram of optical fiber communication system.

9. Mention the salient features of Miller indices.

10. Define dielectric loss.

PART – B (5 x 12 = 60)

Answer All the Questions

11. Explain the classical free electron theory of conducting materials.

(or)

12. Discuss the properties of superconductors. Distinguish between Type I and Type II superconductors. (7+5)

13. Obtain the expression for carrier concentration in an intrinsic semiconductor.

(or)

14. Explain the construction and working of LED.

15. Explain hysteresis in magnetism. Differentiate soft and hard magnetic materials.

(or)

16. Discuss the following

(a) Floppy Disc and

(b) CD-ROM.

17. Explain the construction and working of CO₂ laser.

(or)

18. Discuss the types of optical fibers and the various loss mechanisms.

19. Obtain the unit cell characteristics for FCC and HCP crystal structures.

(or)

20. Derive the expression for local field in a dielectric. Deduce Clausius-Mosotti equation. (7+5)

Duraimani

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