Why do you see grain boundaries ? Framing it otherway, what is the source of contrast in OM and EM (SEM) in distinguishing grains and grain boundaries?
What is resolution? How do you achieve and what is the best resolution, how is it different for different source of radiation? Give examples
How is SE yield related to z? Is there any relation, if it does not have? why?
How is BSE related to Z? Explain interms of interaction volume?
Factors affecting intensity of x-rays? Why?
What are systematic absences? Physical meaning of them in each case
Derive c/a ratio, packing fraction, coordinates, void coordinates, (octahedral,tetrahedral) for HCP, fcc, bcc.
how to explain Depth of focus/field in terms of ray diagram and equation
how Laue equations and ewald's sphere come about? and why we call Laue as conditions and Bragg's law.
how scattering by electrons, atoms unit cell happen?
how can you stack 2-d nets to arrive at 14 Bravais lattices?
how to draw stereographic projection?
how to explain all symmetry elements? can you!!!!
how kikuchi lines form in EBSD?
No x no.of questions... When shall we expect the answers?
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