Gce Model Questions Vol1 2024 Physics Question 11
Practice objective / multiple choice question 11 from the 2024 Gce Model Questions Vol1 Physics examination.
An isolated hydrogen atom is initially excited from the ground state (n=1) to the n=5 level. It then decays to the ground state by emitting two photons: the first photon corresponds to the transition \(5\rightarrow3\) and the second to \(3\rightarrow1\). The second photon is incident on a clean metal surface and ejects electrons with a measured stopping potential of \(2.0\ \text{V}\). Given that the energy of a level \(n\) in hydrogen is \(E_n = -\dfrac{13.6\ \text{eV}}{n^{2}}\), determine the work function of the metal (in eV) to three significant figures.
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This is Gce Model Questions Vol1 2024 Physics Question 11. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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