What happens when light from a luminous object hits a non-luminous object?

When light from a luminous object hits a non-luminous object, it can be reflected, which allows us to see the non-luminous object. The luminous object emits light, and when this light reaches the non-luminous object, some of the light bounces off its surface and travels to our eyes, enabling us to perceive the object. This is why we can see things that do not produce their own light, like a tree or a book in sunlight; they reflect the light that illuminates them.

The reason other options do not apply includes that not all light is absorbed entirely; some of it is usually reflected, allowing us to see the object. Non-luminous objects do not create their light, as they depend on external light sources to become visible. Additionally, light does not speed up when it interacts with objects; it travels at a constant speed in a vacuum, but its speed can change in different materials. Thus, reflection is the process that enables us to see non-luminous objects using light emitted from luminous sources.