An X-ray beam of a wavelength 0.15 nm is incident on an NaCl crystal, at 25° to reflecting planes of the crystal. If the first order reflections occurred in the spectrum, find the spacing of the reflecting planes of the crystal. (а) 0.18 pm (b) 0.35 nm (с) 0.18 nm (d) 0.35 pm

An X-ray beam of a wavelength 0.15 nm is incident on an NaCl crystal, at 25° to reflecting planes of the crystal. If the first order reflections occurred in the spectrum, find the spacing of the reflecting planes of the crystal. (а) 0.18 pm (b) 0.35 nm (с) 0.18 nm (d) 0.35 pm

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 72P: X-rays of wavelength 0.103 nm reflects off a crystal and a second-order maximum is recorded at a...

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Question

An X-ray beam of a wavelength 0.15 nm is incident on an NaCl crystal, at 25° to
reflecting planes of the crystal. If the first order reflections occurred in the spectrum, find
the spacing of the reflecting planes of the crystal.
(а) 0.18 pm
(b) 0.35 nm
(c) 0.18 nm
(d) 0.35 pm

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