Which of the following shapes are formed by the diffracted radiation in the powder method?
A
Spherical
B
Cubical
C
Circular
D
Conical
Answer:
The correct option is D. Conical
Note
For any set of lattice phases, the diffracted radiation forms the surface of a cone. The only requirement for diffraction is that the planes be at angle Θ to the incident beam, no restriction is placed on the angular orientation of the plane about the axis of the incident beam.