Question:
How many photons is required to excite a hydrogen atom for the following lasers?
Red R: 650 nm
Green G: 532 nm
Violet V: 405 nm
Solution:
We need to have $ 0.99R_\infty hc = E \le \frac{nhc}{\lambda} $, therefore $ n \ge \frac{0.99R_\infty hc \lambda}{hc} = 0.99R_\infty \lambda $.
Plugging the values in, we have minimum n = 8, 6, 5 respectively.
How many photons is required to excite a hydrogen atom for the following lasers?
Red R: 650 nm
Green G: 532 nm
Violet V: 405 nm
Solution:
We need to have $ 0.99R_\infty hc = E \le \frac{nhc}{\lambda} $, therefore $ n \ge \frac{0.99R_\infty hc \lambda}{hc} = 0.99R_\infty \lambda $.
Plugging the values in, we have minimum n = 8, 6, 5 respectively.
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