Physics Unit27: Early Quantum Theory and Models of the Atom (id: bbe814c13)

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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]
The wavelength of a ruby laser is 69r23xqpic /h; g4.3 nm. W 8f,o j8w cb i2:9wlhzp1lk)cuhat is the energy difference between the t)9l18: cw8wujoh2 cl z bp,ikfwo energy states involved in laser action?

A. $1.537 \; eV$
B. $1.646 \; eV$
C. $1.786 \; eV$
D. $1.812 \; eV$


参考答案:  C


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