Neco Model Questions Vol1 2020 Physics Question 48
Practice objective / multiple choice question 48 from the 2020 Neco Model Questions Vol1 Physics examination.
In a hydrogen atom an electron makes a transition from the \(n=4\) level to the \(n=2\) level, emitting a photon of wavelength \(486\ \text{nm}\). The same electron then drops from \(n=2\) to \(n=1\), emitting a second photon. Using the Rydberg formula \(\frac{1}{\lambda}=R\left(\frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}}\right)\) with \(R=1.097\times10^{7}\ \text{m}^{-1}\), determine the wavelength of the second photon.
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This is Neco Model Questions Vol1 2020 Physics Question 48. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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