if a light is an electromagnetic wave then it do not need any medium to propagate like sound, then why the speed affect due to refraction as it do not need any medium it can also flow through vaccum?
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if a light is an electromagnetic wave then it do not need any medium to propagate like sound, then why the speed affect due to refraction as it do not need any medium it can also flow through vaccum?
please ans briefly this ques.....
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Answer:
Light is indeed an electromagnetic wave, and it can propagate through a vacuum because it doesn't require a medium to travel through. However, the speed of light can be affected by refraction when it passes from one medium into another. This occurs because the electromagnetic waves interact with the charged particles in the material they are entering, causing the speed of light to change. This change in speed results in the bending of the light's path, which is what we observe as refraction. In essence, while light doesn't need a medium to propagate, its speed can be altered when it encounters different materials, leading to the phenomenon of refraction.