How should plane change and value change relate in a cube?
Answer and explanation
Correct answer: A clear value difference can appear at a plane change
Direct answer: B. A cube has separate planar faces, and each face can point toward the light source at a different angle. A plane facing the light more directly may appear lighter, a plane turned partly away may have a middle value, and a plane facing away may be darker. A clear value difference at the change from one plane to another helps the eye read the cube as solid rather than flat. B is correct because value can reinforce a structural change in direction. A is wrong because making every plane identical can remove the visual evidence of turning and flatten the cube. C is wrong because value describes lightness or darkness, not the written title. D is wrong because plane orientation directly affects illumination. The exact values depend on the lighting arrangement, so the rule is not that every cube always has the same fixed pattern; the important principle is that value should respond to light and plane direction.
Frequently asked questions
What is the correct answer to this question?
A clear value difference can appear at a plane change
Why is this the correct answer?
Direct answer: B. A cube has separate planar faces, and each face can point toward the light source at a different angle. A plane facing the light more directly may appear lighter, a plane turned partly away may have a middle value, and a plane facing away may be darker. A clear value difference at the change from one plane to another helps the eye read the cube as solid rather than flat. B is correct because value can reinforce a structural change in direction. A is wrong because making every plane identical can remove the visual evidence of turning and flatten the cube. C is wrong because value describes lightness or darkness, not the written title. D is wrong because plane orientation directly affects illumination. The exact values depend on the lighting arrangement, so the rule is not that every cube always has the same fixed pattern; the important principle is that value should respond to light and plane direction.
Which subject and chapter does this question cover?
This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Form.
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