A postulate of special relativity is that the speed of light
A)like all motion, is relative.
B)for all observers is a constant.
C)both of these
D)neither of these

Question

Quizplus · Accepted Answer

According to the postulates of special relativity, the speed of light is constant for all observers, regardless of their own motion. This principle has been experimentally verified and is a crucial aspect of the theory of relativity. Therefore, the correct answer is B, "for all observers is a constant."

A Postulate of Special Relativity Is That the Speed of Light