Which type of electromagnetic radiation travels fastest in a vacuum?
A)radio
B)visible light
C)X-ray
D)gamma rays
E)They all travel at the same speed.

Question

Quizplus · Accepted Answer

All types of electromagnetic radiation travel at the same speed in a vacuum, which is approximately 299,792,458 meters per second, denoted as "c". This speed is one of the fundamental constants of physics. All types of electromagnetic radiation travel at the same speed in a vacuum, which is the speed of light, approximately 299,792,458 meters per second.

Which Type of Electromagnetic Radiation Travels Fastest in a Vacuum