Which of the following materials is known to diffuse light more effectively?

Frosted glass is known to diffuse light more effectively due to its textured surface, which scatters light in multiple directions rather than allowing it to pass straight through. This scattering effect softens and spreads the light, creating a more even illumination and reducing harsh shadows. Because of this property, frosted glass is commonly used in applications where softer lighting is preferred, such as in lampshades, shower doors, or privacy windows.

In contrast, cleared glass allows light to pass directly through with minimal diffusion, resulting in sharper shadows and a more focused beam. Mirrored surfaces reflect light rather than diffuse it, directing it away and creating bright highlights rather than softening the illumination. Translucent plastics can diffuse light to some extent, but their effectiveness can vary widely based on their thickness and texture. Hence, while they can provide some level of diffusion, frosted glass typically offers superior light diffusion capabilities compared to these materials.