A Beam of X-Rays of Different Frequencies Is Reflected at 10

question 22

Multiple Choice

A beam of X-rays of different frequencies is reflected at 10 degrees off a crystal of interatomic spacing 0.2 nm. Which X-ray wavelength is preferentially reflected?

• A) 0.0943 nm
• B) 0.139 nm
• C) 0.0695 nm
• D) 1.02 × 10−¹⁰ m
• E) 3.47 × 10−¹¹ m

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