Question

Which of the following, the correct arrangement of electromagnetic spectrum in decreasing order of wavelength is ______.
Fill in the blank with the correct answer from the options given below

• A. Radio waves, X-rays, Infrared waves, microwaves, visible waves
• B. Infrared waves, microwaves, Radio waves, X-rays, visible waves
• C. Radio waves, microwaves, Infrared waves, visible waves, X-rays
• D. X-rays, visible waves, Infrared waves, microwaves, Radio waves

Answer 1

The Correct Option is C

The electromagnetic spectrum encompasses all electromagnetic radiation, characterized by varying wavelengths and frequencies. To order these waves by decreasing wavelength, the sequence is as follows:

• Radio waves: These possess the longest wavelengths, spanning approximately 1 millimeter to over 100 kilometers.
• Microwaves: Shorter than radio waves, their wavelengths typically range from 1 millimeter to 1 meter.
• Infrared waves: These have wavelengths from about 700 nanometers to 1 millimeter.
• Visible waves: This segment of the spectrum is perceptible to the human eye, with wavelengths between approximately 380 nanometers and 750 nanometers.
• X-rays: Significantly shorter in wavelength, these range from 0.01 to 10 nanometers.

In descending order of wavelength, the correct arrangement of these electromagnetic radiation types is: Radio waves, microwaves, Infrared waves, visible waves, X-rays.