Some properties of different bands of infrared (IR) radiation are shown in the table below.
| Infrared Band | Wavelength range | Atmospheric transmission |
|---|---|---|
| IR-A | 780 nm to 1400 nm | High |
| IR-B | 1400 nm to 3000 nm | Medium |
| IR-C | 3000 nm to 5000 nm | Low |
The speed of electromagnetic waves in a vacuum is 3.00 × 108 m/s.
Calculate the frequency of the shortest wavelength of IR-B radiation. Show your working and give your answer to 3 significant figures.
64 exam-style questions on Edexcel GCSE Physics 4.1 Wave properties, covering 4.1.1 Waves transfer energy and information, 4.1.2 Frequency, wavelength, amplitude, period and wavefronts, 4.1.3 Longitudinal and transverse waves, 4.1.4 The wave speed equations, 4.1.5 Measuring wave velocity, and 4.1.6 Calculating depth or distance from waves. Each one has a worked solution and a mark scheme showing where the marks go.