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| Q. |
Monochromatic X-rays reflected from a calcite crystal (lattice constant ? = 3? ) give rise to first order Bragg reflection at 6.7?. The wavelength of these X-rays will be |
| A. | 7A |
| B. | 170 A |
| C. | 70 A |
| D. | 0.7 A |
| E. | 0.07 A |
| Answer» D. 0.7 A | |
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