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When can a contact shadow appear only on one side of an object?

Answer and explanation

Correct answer: When the light direction and contact surface create that actual relationship

The governing concept is contact, occlusion, and directional light. A contact shadow is darkest where the object touches or nearly touches the receiving surface, but its visible extent can be stronger on one side when the object’s shape, the plane, or the light direction blocks illumination unevenly. Thus option A is correct. The object’s colour or a black background does not create this rule, and a one-sided contact shadow is not always incorrect.

Related tags

Object-ObservationContact-ShadowLight-DirectionOcclusionObject ObservationDrawing BasicsArt EducationClass 9 Mcq

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