Many remote controls use a type of electromagnetic radiation to communicate with devices like televisions. This radiation has a slightly longer wavelength than visible red light and cannot be seen by the human eye.
Which type of electromagnetic waves are used for this type of cordless communication?
gamma rays
infrared
ultraviolet
X-rays
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.