Properties Of Electromagnetic Waves (GCSE Physics)

When visible light passes from air into glass, its wavelength in the glass compared with in air becomes:

Which electromagnetic wave would be most suitable for transmitting TV signals over long distances through the atmosphere?

A detector measures an increased number of high-energy photons arriving from a source. Which change in the electromagnetic wave does this most directly indicate?

Which of the following is a typical use of visible light in technology?

Sunburn is caused mainly by which part of the electromagnetic spectrum reaching skin?

Which change would increase the intensity (energy per second per area) of an electromagnetic wave arriving at a detector?

A teacher says "All electromagnetic waves travel faster in glass than in air." Is this statement correct? Choose the best answer.

Which material property most affects how much of an electromagnetic wave is absorbed when the wave strikes a surface?

Which electromagnetic waves are most commonly used for thermal imaging cameras (night vision) and remote control remotes?

Which of these electromagnetic wave types is ionising and therefore presents the greatest risk of causing cell damage at the same exposure level?

Which EM waves are used for medical imaging that relies on passing high energy photons through the body to produce radiographs?