Question

why a change in speed of light causes refraction of light​

Answer 1

Answer:

Change in speed of light causes refraction because this occurs when the medium changes, thus resulting in the light ray to bend away or towards normal thereby resulting in refraction..

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Answer 2

Answer:

Explanation:Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). This change of direction is caused by a change in speed. For example, when light travels from air into water, it slows down, causing it to continue to travel at a different angle or direction.