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| Q. |
Which of the following shapes are formed by the diffracted radiation in the powder method? |
| A. | circular |
| B. | spherical |
| C. | conical |
| D. | cubical |
| Answer» C. conical | |
| Explanation: 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. | |
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