Two Planes of a Crystal Are Separated by 3 $\times$ 10^-10 M)

question 24

Multiple Choice

Two planes of a crystal are separated by 3.25 Angstroms (or 3.25 $\times$ 10^-10 m) . Light of what wavelength shows constructive interference at a scattering angle of 17.5 degrees?

• A) 3.9 Angstroms
• B) 0.49 Angstroms
• C) 9.75 Angstroms
• D) 1.46 Angstroms
• E) 1.95 Angstroms

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