The wavelength of a beam of gamma rays, travelling through vacuum, is 4.8 × 10-13 m. What is its frequency?
1.6×10−21 Hz1.6 \times 10^{-21}\text{ Hz}1.6×10−21 Hz
6.3×10−21 Hz6.3 \times 10^{-21}\text{ Hz}6.3×10−21 Hz
6.3×1020 Hz6.3 \times 10^{20}\text{ Hz}6.3×1020 Hz
6.3×1021 Hz6.3 \times 10^{21}\text{ Hz}6.3×1021 Hz
198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.