本题目来源于试卷: Physics Unit27: Early Quantum Theory and Models of the Atom，类别为 国际高中通用物理
[单选题]
X-rays of wavelength 0.20 n 90w3+tyw fmsrm are scattered by a fvc - nlehta:a89jj5ie3. 4w rcd7v: vmetal. The wavelength shift is observed to dn:ac9vwj3-eaivl tf j h8e74.5crv:be
$2.1 \times 10^{-12} \; m$ at a certain scattering angle measured relative to the incoming X-ray. What is the scattering angle?
A. $20^{\circ}$
B. $40^{\circ}$
C. $60^{\circ}$
D. $80^{\circ}$
参考答案: D
本题详细解析:
暂无
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