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 metal's surface in theaoa 6cm7y 2y l)v w,ow*ieo+ lb3iv+g0+) qcyb photoeplwt6ic ;/d4 h od.3qo. bhn*o+w1hlelectricdd ;/lq. h+oow4p t3 nh.i6*hoclb ew1 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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Post time 2024-1-22 00:41:22