III MID ASSIGNMENT QUESTIONS..

1. Describe the top down methods by which nano materials are fabricated or synthesized?
2. 
   Derive sabine’s formula and define reverberation
3. 
   Describe step index and graded index fibre and explain the transmission of signal through it
4. 
   Define acceptance angle and numerical aperture and derive the expression for both
5. 
   Explain the construction, principle and working of He-Ne laser
6.  
7. What is meissner effect?explain
    Write the applications of super conductors. What are type I and type II super conductors?
8. 
   Derive the relation between electronic polariability and dielectric constant for a cubic material (clausius mossoti relation)  (local field also)
9. http://firstranker.com/jntu/16176333/09A1BS02-ENGINEERINGPHYSICS-2696.html