Sree Narayana Guru College of Engineering and Technology 2007 ENGINEERING PHYSICS(B) - ME Second series test - - Question Paper

ENGINEERING PHYSICS(B)
(ME)

Time: 2Hours Marks: 50

Part A: ans all ques.


1. elaborate the differences ranging from spontaneous and stimulated emission.
2. discuss the basic principle of Holography. Mention its applications.
3. define the working of He-Ne laser with energy level diagram.
4. elaborate ultrasonics? How they are detected?
(4x5=20 Marks)


Part B: ans 2 ques.


5 (a) elaborate isochromatics and isoclinics? provide the mathematical analysis of them.

(b) Write a note on Meissner effect.

OR

6 (a) discuss the magnetic behaviour of kind ? and kind II superconductors.
(b) Arrive at stress-optic relations for two-dimensional case.


7 (a) State and derive Bragg’s legal regulations of X-ray diffraction. define X-ray spectrometer and discuss how it is used to determine the interplanar spacing of a crystal.
(b) provide an account of different breakdown mechanisms.

OR

8 (a) discuss with energy band diagram the classification of solids into metals, semiconductors and insulators. (5 Marks)
(b) Write a note on radiographic method of nondestructive testing.
(c) discuss the importance of reverberation time in good acoustics

Earning:   Approval pending.