An automated sorting system shines light containing equal intensities of red and blue wavelengths onto two opaque labels. Light reflected by a label passes through a colour filter, R, before reaching a detector.
| Wavelength | Light reflected by label P (%) | Light reflected by label Q (%) | Light transmitted by filter R (%) |
|---|---|---|---|
| Red | 80 | 10 | 90 |
| Blue | 5 | 75 | 5 |
The larger the total amount of light reaching the detector, the larger the detector reading.
Explain which label produces the larger detector reading.
93 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.