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]
In order for a photon to eject aab , h giky/g,qm)*3e,ciu)ion electron from a md u -(dmvpgq1;etal's surface in the photoelectri1ug v;md -(pqdc effect, the photon's
A. frequency must be greater than a certain minimum value.
B. speed must be greater than a certain minimum value.
C. wavelength must be greater than a certain minimum value.
D. momentum must be zero.
参考答案: A
本题详细解析:
暂无
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