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1. |
The wavelength of X rays used in X ray crystallography is 8 x 10-10 m. It undergoes the first-order reflection at a glancing angle of 4.59 . What is the spacing between the atomic planes? |
A. | 4 x 10<sup>-9</sup> m |
B. | 15 x 10<sup>-9</sup> m |
C. | 10 x 10<sup>-9</sup> m |
D. | 5 x 10<sup>-9</sup> m |
Answer» E. | |