A researcher models two successive photon emissions from an atom. The energy of the atom at each stage is shown in the table.
| Stage | Energy of the atom |
|---|---|
| 1 | 8.0 × 10-19 J |
| 2 | 4.2 × 10-19 J |
| 3 | 2.0 × 10-19 J |
Calculate the energy carried by each emitted photon.
104 exam-style questions on Edexcel GCSE Physics 5.4 Uses and dangers of EM radiation, covering 5.4.1 Dangers of electromagnetic radiation, 5.4.2 Uses of electromagnetic radiation, 5.4.3 Radio waves and oscillations in circuits, and 5.4.4 Changes in atoms and nuclei generating radiation. Each one has a worked solution and a mark scheme showing where the marks go.