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How may a smooth ball appear if its value changes abruptly from light to dark?

Answer and explanation

Correct answer: Angular or flat

A smooth spherical surface normally changes gradually from light through middle values into shadow. An abrupt light-to-dark boundary suggests that the surface has a sharp edge or a separate plane, so the ball may look angular, cut, or flat instead of smoothly rounded. Roughness would involve many irregular small changes, not one clean abrupt transition. Use gradual tonal blending to describe a sphere.

Related tags

Object ObservationTonal ValueGradationSphere ShadingDrawing BasicsArt EducationClass 9 Mcq

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