Multiple choice

Which of the following has the shortest wavelength?

  1. Micro waves

  2. Ultraviolet radiations

  3. X-ray

  4. Radio waves

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the electromagnetic spectrum, X-rays have shorter wavelengths than ultraviolet radiation, which in turn has shorter wavelengths than visible light. Microwaves and radio waves have much longer wavelengths. Therefore, among the given options, X-rays have the shortest wavelength. If gamma rays were an option, they would be even shorter.