Question

What causes a change in the direction of light

Answer 1

Answer:

Change of speed causes change of direction.

Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). ... When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction.

Answer 2

Explanation:

Change of speed causes change of direction

Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). ... When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction.