Igcse Model Questions Vol1 2022 Physics Question 26
Practice objective / multiple choice question 26 from the 2022 Igcse Model Questions Vol1 Physics examination.
A beam of photons is emitted when a He⁺ ion (hydrogen‑like, atomic number Z) undergoes the following transitions: an electron in the ion is first excited from the ground state (n = 1) to n = 3 by absorbing a photon, then it absorbs a second photon and jumps to n = 5. It subsequently returns to the ground state by two successive emissions: first from n = 5 to n = 2 and then from n = 2 to n = 1. The ionisation energy of He⁺ is \(54.4\ \text{eV}\). Determine the ratio of the wavelength of the photon emitted in the \(5 \rightarrow 2\) transition to that of the photon emitted in the \(2 \rightarrow 1\) transition. Give your answer to two decimal places.
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This is Igcse Model Questions Vol1 2022 Physics Question 26. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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