A wavelength scanner is used to examine two neighbouring groups of the electromagnetic spectrum. It detects every wavelength within each interval shown.
| Group | Wavelength interval |
|---|---|
| Microwaves | 1.00 mm to 0.99 mm |
| Infrared | 0.99 mm to 0.98 mm |
A student says that the electromagnetic spectrum cannot be continuous because the group name changes between microwaves and infrared.
Explain why the student's conclusion is incorrect. Use the table in your answer.
84 exam-style questions on Edexcel GCSE Physics 5.2 The electromagnetic spectrum, covering 5.2.1 Electromagnetic waves and refraction in glass (core practical), 5.2.2 Groups of the electromagnetic spectrum, 5.2.3 Wavelength-dependent behaviour of EM waves, and 5.2.4 Velocities of EM waves in different substances. Each one has a worked solution and a mark scheme showing where the marks go.