An atom in a detector material has the energy levels shown.
| Energy level | Energy in J |
|---|---|
| L | 0 |
| M | 1.8 × 10-19 |
| N | 6.0 × 10-19 |
An electron in the atom is initially at level L. An incoming photon causes the electron to move from level L to level N. The electron then moves from level N to level M, producing a photon.
For each change, calculate the energy transferred and state whether the atom gains or loses energy.
Explain whether the photon produced has a higher or lower frequency than the incoming 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.