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The Figure Shows X Rays Incident on a Crystal Spectrometer

Question 137

Multiple Choice

The figure shows x rays incident on a crystal spectrometer that are reflected from the crystal and used for Compton scattering in a carbon block. Of the wavelengths shown, λ<sub>3</sub> ≠ λ; thus, which of the following expressions is true? A) λ <sub>1</sub> =λ <sub>2</sub> = λ <sub>3 </sub>= λ <sub>4</sub> B) λ = λ <sub>1</sub> > λ <sub>3</sub> C) λ < λ <sub>2</sub> < λ <sub>1</sub> < λ <sub>4</sub> D) λ <sub>3 </sub>> λ <sub>1</sub> = λ <sub>4</sub> E) λ <sub>4</sub> > λ <sub>2</sub> > λ The figure shows x rays incident on a crystal spectrometer that are reflected from the crystal and used for Compton scattering in a carbon block. Of the wavelengths shown, λ3 ≠ λ; thus, which of the following expressions is true?


A) λ 1 =λ 2 = λ 3 = λ 4
B) λ = λ 1 > λ 3
C) λ < λ 2 < λ 1 < λ 4
D) λ 3 > λ 1 = λ 4
E) λ 4 > λ 2 > λ

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