Neco Model Questions Vol1 2019 Physics Question 1
Practice objective / multiple choice question 1 from the 2019 Neco Model Questions Vol1 Physics examination.
An atom is placed in a uniform magnetic field and the spectral line corresponding to the transition from the n = 3 to n = 2 level (unperturbed wavelength \(\lambda_{0} = 656.3\,\text{nm}\)) shows a normal Zeeman splitting into three components. The measured separation between adjacent components is \(\Delta\lambda = 0.02\,\text{nm}\). Given \(\mu_{B} = 9.274\times10^{-24}\,\text{J·T}^{-1}\), \(h = 6.626\times10^{-34}\,\text{J·s}\) and \(c = 3.00\times10^{8}\,\text{m·s}^{-1}\), (a) determine the magnetic field strength \(B\), and (b) calculate the energy of the photon for the unperturbed transition in electron‑volts.
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This is Neco Model Questions Vol1 2019 Physics Question 1. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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