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Why does a cast shadow often become softer farther from the object?

Answer and explanation

Correct answer: The spread of light rays blurs the shadow boundary

The governing concept is shadow-edge softness, determined by the geometry and apparent size of the light source. Near the object, the blocked region has a clearer boundary; farther away, rays from an extended or partly diffused source can reach the penumbra, producing a gradual transition. This is why artists vary edge hardness instead of outlining every cast shadow sharply. Paper moisture, object shrinkage, or colour change is not the cause.

Related tags

Cast ShadowSoft EdgeLight SpreadPencil ShadingDrawing BasicsArt EducationClass 9 Mcq

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