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A flat background has no visible brush marks yet its sheen varies. What is the likely cause?

Answer and explanation

Correct answer: Layer thickness and paint concentration were uneven

The governing concept is uniform film formation. Even when individual brush marks are hidden, areas with different layer thickness or paint concentration can dry with different surface reflectance, producing uneven sheen and sometimes tonal variation. Option A is correct. A heavy handle, small paper size, or difficult subject may affect handling or planning, but none directly changes the dried paint film in this way.

Related tags

Uneven SheenLayer ThicknessFlat ColourPaint ConcentrationColour Filling And BlendingPainting TechniquesArt EducationClass 9 Mcq

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