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Why may the edge of a cast shadow become softer farther from the object?

Answer and explanation

Correct answer: The spread of light makes the edge less distinct

A cast shadow is formed when an object blocks light from reaching another surface. As the shadow extends farther from the object, light from the finite source can spread into the boundary, producing a penumbra and a less distinct edge. Option C is correct. Paper thickness, pencil strength, and a colour change do not explain this optical softening.

Related tags

Cast ShadowSoft EdgeLight SpreadShadingPencil ShadingDrawing BasicsArt EducationClass 9 Mcq

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