(II) X-rays of wavelength 0.138 nm fall on a crystal whose
Chapter 25, Problem 60P(choose chapter or problem)
Problem 60P
(II) X-rays of wavelength 0.138 nm fall on a crystal whose atoms, lying in planes, are spaced 0.285 nm apart. At what angle (relative to the surface, Fig. 25–38) must the X-rays be directed if the first diffraction maximum is to be observed?
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