X rays can be used in the study of crystal structure because they

Assessment: JAMB UTME - Physics - 2004 Subject: Physics

Question 1 Report

X rays can be used in the study of crystal structure because they
Answer Details
X-rays can be used in the study of crystal structure because they have an extremely short wavelength. This allows them to diffract off the atoms in the crystal lattice, producing a unique pattern that can be used to determine the arrangement of atoms within the crystal. The short wavelength of X-rays allows them to interact with the closely spaced atoms in the crystal, giving rise to the diffraction pattern. The other options are incorrect: X-rays are not long-reaching, they are not invisible (they can be detected using photographic film or electronic detectors), and their speed is not a factor in their usefulness for crystallography.
Read lesson note on Electromagnetic Field (Part 2) (WAEC)
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