A student writes four statements about electromagnetic waves.
Statement 1: Radio waves travel faster than X-rays in space.
Statement 2: Gamma rays have the shortest wavelength of all electromagnetic waves.
Statement 3: Microwaves transfer energy from a source to an absorber.
Statement 4: Infrared has a higher frequency than ultraviolet.
Which two statements are incorrect?
Write a corrected version of Statement 1.
An electromagnetic wave has a wavelength of 3.0 cm. The speed of electromagnetic waves is 3.0 × 108 m/s.
Calculate the frequency of the wave.
Name the group of the electromagnetic spectrum that the wave in (c) belongs to.
48 exam-style questions on OCR GCSE Physics 5.2 The electromagnetic spectrum, covering 5.2.1 Electromagnetic waves in space, 5.2.2 Energy transfer by electromagnetic waves, 5.2.3 Frequency and wavelength across the spectrum, 5.2.4 Groups of the electromagnetic spectrum, 5.2.5 Visible light and the limits of human sight, 5.2.6 Light as an electromagnetic wave, 5.2.7 Uses of electromagnetic waves, 5.2.8 Hazards of ultraviolet, X-rays and gamma rays, 5.2.9 Ultrasound and imaging inside the body, and 5.2.10 Radio waves and oscillating circuits. Each one has a worked solution and a mark scheme showing where the marks go.