本题目来源于试卷: Physics Unit27: Early Quantum Theory and Models of the Atom,类别为 通用国际物理
[单选题]
A beam of X-rays of frequencydgkdwfr8( 20jq/ocz t+n1:c w f is incident upon a substance that h;)g8tq x(i h9hizr,3(s ;osuucd ) rsscatters the beam in various directions. If we measu)s3u,( h)gi r9( hdsqx;tzcriuos ; 8hre 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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