Which of the following types of electromagnetic radiation travels at the greatest speed in vacuum?
A)Radio waves
B)Visible light
C)X rays
D)Gamma rays
E)All of these travel at the same speed

Question

Quizplus · Accepted Answer

All forms of electromagnetic radiation, including radio waves, visible light, X-rays, and gamma rays, travel at the speed of light in vacuum, which is approximately 299,792,458 meters per second. Therefore, they all travel at the same speed.

Which of the Following Types of Electromagnetic Radiation Travels at the Greatest