Question

Question 17. What is the cause of refraction?​

Answer 1

Answer:

hey mate your answer is here.........

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. ... When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction......

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Answer 2

As the light travels from one medium to another it's speed changes which forces the light to bend this causes refraction...

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