Physics Unit27: Early Quantum Theory and Models of the Atom (id: 745a5b3e3)

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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]
An electron has a wavelength ofekc.n9dr.8/rpv*l 5bz* euv d 0.7jwh0 m(nrj:3u ttj:5ikt :3tyn otm 2123 nm. What is its energy in eV? (This energy is not in the3un:50kjjyijt 2o73 (mt:t mrhwt t:n relativistic region.)

A. $20 \; eV$
B. $60 \; eV$
C. $80 \; eV$
D. $100 \; eV$


参考答案:  D


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