本题目来源于试卷: Physics Unit27: Early Quantum Theory and Models of the Atom，类别为 Generic Physics
[单选题]
In order for a photon to eject an electron from a metals/)(pmm8gq 4m p0 cza31 v3lo7fqzghnb+ f)cr's95 -rq:g udkv4n w6gps surface in the photoelectric effect, the photon'sgr d9vpk-u64qg:5wns
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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Post time 2024-1-22 00:41:22