Multiple choice general knowledge science & technology

Which of the following properties applies to X-rays, gamma rays, infra-red, ultra-violet & visible light?

  1. They are all affected by a magnetic field

  2. They are all damaging to health

  3. They all travel with the same speed in a vacuum

  4. They all have similar wavelengths
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

All electromagnetic waves (X-rays, gamma rays, infrared, ultraviolet, and visible light) travel at the same speed in a vacuum - the speed of light (c ≈ 3×10^8 m/s). They are not all affected by magnetic fields, not all damaging to health, and they have very different wavelengths.

Keep practicing — related questions