Which has the longest wavelengths-light waves, x-rays, or radio waves?

Radio waves

To determine which type of waves has the longest wavelength among light waves, x-rays, and radio waves, we need to understand the electromagnetic spectrum. The electromagnetic spectrum is a range of all possible frequencies of electromagnetic radiation, which includes various types of waves, such as radio waves, microwaves, infrared waves, visible light, ultraviolet rays, x-rays, and gamma rays.

In this case, we are comparing light waves, x-rays, and radio waves. Light waves are a part of the electromagnetic spectrum that we can see with our eyes. The visible light spectrum consists of different colors, with red having the longest wavelengths and violet having the shortest wavelengths.

Moving beyond the visible light spectrum, x-rays have shorter wavelengths compared to visible light waves. X-rays are often used in medical imaging and have higher energy than visible light.

On the other hand, radio waves have the longest wavelengths among these three options. Radio waves range from a few centimeters to several kilometers, making them significantly longer than x-rays and visible light waves. Radio waves are commonly used in telecommunications, broadcasting, and radar systems.

So, to answer your question, radio waves have the longest wavelengths among light waves, x-rays, and radio waves.