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Gaokao Physics Practice Question

已知氢原子的基态能量为 $E_{1}$, 激发态能量 $E_{n}=\frac{E_{1}}{n^{2}}$, 其中 $n=2$, 3.... 用 $\mathrm{h}$ 表示普朗克常量, $\mathrm{c}$ 表示真空中的光速。能使氢原子从第一激发态 电离的光子的最大波长为

  1. A.$-\frac{4 h c}{3 \mathrm{E}_{1}}$
  2. B.$-\frac{2 h c}{\mathrm{E}_{1}}$
  3. C.$-\frac{4 h c}{\mathrm{E}_{1}}$
  4. D.$-\frac{9 h c}{\mathrm{E}_{1}}$

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