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Why do small broken patterns of light and shadow appear on a rough surface?

Answer and explanation

Correct answer: Tiny projections receive light from different directions

A rough surface is made of many tiny irregular planes and projections. Because each small plane faces the light at a different angle, some receive illumination while others turn away and become darker. Their repeated variation creates broken patches of light and shadow, so option A is correct. A perfectly flat surface would show a more continuous pattern, and the absence of light cannot create visible highlights. In drawing, add this micro-texture only after the main form and value structure are established.

Related tags

SketchingRough-TextureMicro-PlanesLightShadowDrawing BasicsArt EducationClass 9 Mcq

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