Which form of electromagnetic radiation travels fastest?
A)gamma rays
B)radio waves
C)all electromagnetic radiation travels at the same speed
D)the speed of radiation depends on the brightness of the source

Question

Quizplus · Accepted Answer

All forms of electromagnetic radiation, including gamma rays and radio waves, travel at the same speed, which is the speed of light (approximately 299,792,458 meters per second). This is due to the fact that all forms of electromagnetic radiation are variations of the same fundamental phenomenon and therefore travel at the same speed through a vacuum. The brightness of the source does not affect the speed of the radiation, only its intensity.

Which Form of Electromagnetic Radiation Travels Fastest