Ordering Electromagnetic Waves by Frequency

Published on March 4, 2026

Other

Arrange Ultraviolet rays, Violet rays, Yellow light, and Microwaves from highest to lowest frequency based on the electromagnetic spectrum order.

Question

Answer

This is a problem about ordering different types of electromagnetic radiation based on their frequency, from highest to lowest.
Step 1: Recall the general order of the electromagnetic spectrum.
The electromagnetic spectrum, ordered from lowest frequency (and longest wavelength) to highest frequency (and shortest wavelength), is typically:
Radio waves Microwaves Infrared Visible Light Ultraviolet X-rays Gamma rays
Step 2: Identify the frequencies of the given types of radiation.
The types of radiation given are:
  1. Microwaves
  2. Yellow light (part of Visible Light)
  3. Violet rays (part of Visible Light)
  4. Ultraviolet (UV) rays
Step 3: Place the visible light components in order.
Visible light follows the order of colors based on frequency (from lowest to highest):
Red Orange Yellow Green Blue Indigo Violet
Therefore, Violet light has a higher frequency than Yellow light.
Step 4: Integrate all the given types into the full spectrum order (from lowest frequency to highest frequency):
Microwaves Yellow light Violet rays Ultraviolet (UV) rays
Step 5: Arrange the list from highest frequency to lowest frequency.
We need to reverse the order found in Step 4:
Highest Frequency Lowest Frequency
Ultraviolet (UV) rays Violet rays Yellow light Microwaves
The final arrangement is:
Ultraviolet (UV) rays, Violet rays, Yellow light, Microwaves.

Theorems

• Relationship Between Frequency and Wavelength

For electromagnetic radiation traveling in a vacuum, the speed of light ( ) is the product of its frequency ( ) and wavelength ( ): . Since is constant, frequency is inversely proportional to wavelength ( ).

• Electromagnetic Spectrum Order by Frequency

The electromagnetic spectrum is ordered by increasing frequency (and decreasing wavelength). The general order relevant to this problem, from lowest frequency to highest frequency, is: Radio Waves < Microwaves < Infrared < Visible Light (Red Violet) < Ultraviolet < X-rays < Gamma Rays. For visible light, frequency increases from Red to Violet: .