In what process is light refracted?

The refraction of light occurs when it travels through different mediums due to a change in its speed. Refraction involves the bending of light rays as they enter a new medium at an angle, which typically takes place when light passes from air into water, glass, or other substances with different optical densities. This change in speed alters the direction of the light rays, which can lead to various optical phenomena, such as the distortion of objects viewed through water or the formation of rainbows.

In contrast, absorption refers to the process where light is taken in by an object and converted to other forms of energy, such as heat, rather than being bent. Scattering involves the dispersal of light in multiple directions and does not involve a change in medium. Emission is the process by which objects release light energy, such as what happens with light bulbs or stars, rather than bending it. Therefore, the correct answer clearly relates to the process of refraction occurring due to different mediums.