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Why is tone more effective than outline alone in showing the roundness of an object?

Answer and explanation

Correct answer: Tone shows gradual changes of light across the surface

The governing concept is tonal modelling of three-dimensional form. On a rounded surface, light gradually changes into half-tone and shadow, and these value transitions make the form appear to turn in space. Therefore option A is correct. An outline can describe the boundary but cannot by itself show the surface turning; tone does not write a name or alter the page’s physical size.

Related tags

Still Life DrawingFormTonal ModellingRoundnessDrawing BasicsArt EducationClass 9 Mcq

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