Which texture property makes a rough surface appear darker than a smooth surface?

Which texture property makes a rough surface appear darker than a smooth surface?

• A. Rough
• B. Smooth
• C. Glossy
• D. Flat

Answer: (A)

Light interaction with surface texture governs brightness. A smooth surface reflects light mainly in one direction (specular reflection), so if you’re in that direction you see a bright highlight, and if not, the surface can still look fairly bright. A rough surface has many tiny facets oriented differently, scattering light in multiple directions and creating micro-shadowed areas. This scattering reduces the amount of light that reaches your eyes from any single angle, making the surface appear duller and darker under the same lighting. The texture property responsible for this darker look is roughness itself. Glossy highlights would tend to brighten the surface, while flat or smooth describe different surface qualities and don’t explain the darker, matte appearance.

Light interaction with surface texture governs brightness. A smooth surface reflects light mainly in one direction (specular reflection), so if you’re in that direction you see a bright highlight, and if not, the surface can still look fairly bright. A rough surface has many tiny facets oriented differently, scattering light in multiple directions and creating micro-shadowed areas. This scattering reduces the amount of light that reaches your eyes from any single angle, making the surface appear duller and darker under the same lighting. The texture property responsible for this darker look is roughness itself. Glossy highlights would tend to brighten the surface, while flat or smooth describe different surface qualities and don’t explain the darker, matte appearance.