Sree Narayana Guru College of Engineering and Technology 2005 ENGINEERING PHYSICS (For ME), Second series test - - Question Paper

Sree Narayana Guru College of Engineering and Technology, Payyanur
Second series test - April 2005

ENGINEERING PHYSICS
(For ME)

Time: 2Hours Marks: 50

Part A: ans all ques.

1 explain the applications of holography
2 Write a short note on Moire fringes
3 discuss Avalanche breakdown and Zener breakdown
4 For Copper at 1000K, obtain the energy at which the probability P(E) that a conduction electron state will be occupied is 0.90
(4x5=20)

Part B: ans 3 ques.

5 explain the effect of magnetic field on superconductors. Distinguish ranging from typeI and typeII superconductors

OR

6 (a) explain the salient features of BCS theory of superconductivity
(b) Write notes on Josephson tunneling


7 define isoclinics and isochromatics with mathematical analysis

OR

8 Write notes on the subsequent
(a) Recording of a hologram and reconstruction of image
(b) He-Ne laser


9 describe the term fermi level. Draw the energy level diagrams and show the position of fermi level for intrinsic semiconductor, p-type semiconductor and n-type semiconductor
OR

10 discuss the working of a semiconductor laser. Mention its advantages

Earning:   Approval pending.