An infrared wave and an ultraviolet wave travel through a vacuum.
Which of the following correctly compares their speed and frequency?
Speed of the two waves: different; Frequencies of the two waves: different
Speed of the two waves: different; Frequencies of the two waves: the same
Speed of the two waves: the same; Frequencies of the two waves: different
Speed of the two waves: the same; Frequencies of the two waves: the same
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.