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If the light source is large and close to the object, how will the cast-shadow edge generally appear?

Answer and explanation

Correct answer: Soft and diffused

The governing concept is penumbra: a large, nearby light source sends rays from many different positions. At the boundary of the shadow, some rays are blocked while others still reach the surface, producing a broad penumbra and a soft, diffused edge. A very small or distant source would make a sharper outline. The edge is not necessarily straight or uniformly black, and the softness is caused by the size and position of the source.

Related tags

Object ObservationCast ShadowPenumbraLight SourceDrawing BasicsArt EducationClass 9 Mcq

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