Which statement correctly compares the properties of different regions of the electromagnetic spectrum?
In a vacuum, gamma rays travel faster than radio waves because their photons carry significantly more energy.
A microwave photon has a higher frequency and thus more energy than an infrared photon.
In a vacuum, radio waves and ultraviolet radiation travel at the same speed, but a radio wave photon has less energy than an ultraviolet photon.
Ultraviolet radiation has a shorter wavelength than X-rays, which explains why ultraviolet radiation is less ionizing.
32 exam-style questions on OCR GCSE Physics The electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.