What type of reflection occurs when light hits a rough surface?

When light strikes a rough surface, it undergoes diffuse reflection. This type of reflection occurs because the microscopic irregularities on the surface cause the incoming light rays to scatter in many different directions rather than reflecting uniformly.

In contrast, smooth surfaces lead to specular reflection, where light rays are reflected at a single angle, allowing for clear and sharp images like those seen in mirrors or calm water. Since rough surfaces scatter light fairly evenly, they do not produce sharp images, which distinguishes diffuse reflection.

This scattering effect is why textures like wood, paper, or concrete, which have uneven surfaces, do not create clear reflections but instead appear more illuminated and less defined when light hits them. Therefore, diffuse reflection is key to understanding how various types of surfaces interact with light.