Two planes of atoms in a crystal are separated by 3.25 × 10^-10m. How many maxima will there be in the diffraction pattern for x-rays of wavelength 2.0 × 10^-10 m scattered from this crystal? A) 4 B) 2 C) 3 D) an infinite number E) 1

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Quizplus · Accepted Answer

The condition for maxima in a diffraction pattern is given by Bragg's law: nλ = 2d sin θ. For maximum n, sin θ must be ≤ 1. Here, d = 3.25 × 10^-10 m and λ = 2.0 × 10^-10 m. The maximum n is 3, as nλ ≤ 2d.

Two Planes of Atoms in a Crystal Are Separated by 3.25