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, in order of decreasing wavelength (and increasing frequency), is:

Radio waves > Microwaves > Infrared waves > Visible light > Ultraviolet light > X-rays > Gamma rays

Let's analyze the given options:

Option 1: Radio waves, X-rays, Infrared waves, microwaves, visible waves

Incorrect. X-rays have a much shorter wavelength than radio waves.

Option 2: Infrared waves, microwaves, Radio waves, X-rays, visible waves

Incorrect. X-rays have a much shorter wavelength than any of the other waves listed.

Option 3: Radio waves, microwaves, Infrared waves, visible waves, X-rays

Correct. This follows the correct order of decreasing wavelength.

Option 4: X-rays, visible waves, Infrared waves, microwaves, Radio waves

Incorrect. X-rays have the shortest wavelength, and radio waves have the longest.

Therefore, the correct arrangement is:

Option 3: Radio waves, microwaves, Infrared waves, visible waves, X-rays