Question

what is angle ? and what is refraction? ​

Answer 1

Explanation:

the angle between a refracted ray and a line drawn normal to the interface between two media at the point of refraction.

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Answer 2

Answer:

Explanation:

This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line. The amount of bending depends on two things: Change in speed – if a substance causes the light to speed up or slow down more, it will refract (bend) more.