Sketch the Ewald sphere construction for 200 diffraction with Mo K a radiation and a polycrystalline specimen of a simple cubic substance with a = 3....

Sketch the Ewald sphere construction for 200 diffraction with Mo Ka radiation and a polycrystalline specimen of a simple cubic substance with a = 3.30 Å. Graphically determine the angular rotation required to orient the sample for 300 diffraction if a u 2u diffractometer is being used. 

Elements of X-Ray Diffraction B.D. Cullity S.R. Stock Third Edition 

Chapter 3 problem 5