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]
A beam of X-rays of freque; i zkv/nh9ed3ncy f is incident upon a subs(3ta2ym qklk32 ig( tdtance that scatters the beam in vakq(at33 mdi2(tlyg 2k rious directions. If we measure the frequency of the scattered X-rays, we will find
A. X-rays with frequency less than f.
B. X-rays with frequency greater than f.
C. only X-rays with frequency f.
D. X-rays with frequencies ranging from less than f to greater than f.
参考答案: A
本题详细解析:
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