Final answer:
Light is refracted when it passes from one transparent object to another.
Step-by-step explanation:
When light bends as it passes from one transparent object to another, the light is refracted.
Refraction is the bending of light as it passes through a medium with a different refractive index. The change in direction occurs because light travels at different speeds in different materials. This phenomenon can be observed when placing a straight stick in a glass of water, as the stick appears to be bent due to the refraction of light.
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