Question

Which of the following is necessary for the refraction of light to occur?​

Answer 1

Answer:

Waves. Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light. ... Since the light speed changes at the interface, the wavelength of the light must change, too.

Explanation:

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Answer 2

Answer:

The amount of bending depends on two things.change in speed.