N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Physics, Part-I
PAPER-VIII
(Electronic Devices)
Annual Examination, 2017
Time 3 Hours. Full Marks 80
Answer any Five Questions.
All questions carry equal marks.
1. Describe the design and operating characteristics of tunnel diode. What is meant by tunneling.
2. Describe the mechanism of current flow in a properly biased BJT. Define the various
parameters of BJT.
3. How can NMOS device be used to implement memory device Explain it.
4. What are Lyotropic Liquid Crystals Discuss generic progression of phases going from low to
how amphiphile concentration.
5. Give an account of the theoretical treatment of liquid crystals.
6. What is meant by magneto optic effect Explain it with special reference to Faraday effect
and magneto-optic-Kerr effect.
7. State and explain Electrostrictive effect and Magnetostrictive effect.
8. What are ferrodectric materials Discuss their classification. Give the important properties of
these materials.
9. Explain the transmissive and the reflective type LCDs.
10. What do you mean by piezoelectricity Discuss the applications of piezoelectric materials in
sensors and actuators.