Answer to Question #135618 in Mechanics | Relativity for PALLAB MONDAL

Question

Show that speed of light in all inertial frames is same

Answer 1

This is the second postulate of the special theory of relativity. The second postulate (invariance of the speed of light):

the speed of light in vacuum is the same for all inertial observers in all directions and does not depend on the speed of the radiation source.

This means that the speed of light in vacuum is the same in all reference frames.