How do contour lines help in understanding an object?
Answer and explanation
Correct answer: They show the object's outer outline and surface curves
The governing concept is contour: a contour line describes the boundary of an object and may also indicate important turns, bulges, hollows, or changes in the direction of its surface. By following these lines, the viewer can understand the object’s silhouette, structure, and suggestion of three-dimensional form. Therefore option A is correct because it includes both the outer outline and surface curves. Colour identification is performed through observation or colour choices, not contour lines, so B is wrong. Contours do not measure light intensity, which belongs to value and shading, so C is wrong. They also do not name the medium, making D unrelated. Contour drawing strengthens careful observation.
Frequently asked questions
What is the correct answer to this question?
They show the object's outer outline and surface curves
Why is this the correct answer?
The governing concept is contour: a contour line describes the boundary of an object and may also indicate important turns, bulges, hollows, or changes in the direction of its surface. By following these lines, the viewer can understand the object’s silhouette, structure, and suggestion of three-dimensional form. Therefore option A is correct because it includes both the outer outline and surface curves. Colour identification is performed through observation or colour choices, not contour lines, so B is wrong. Contours do not measure light intensity, which belongs to value and shading, so C is wrong. They also do not name the medium, making D unrelated. Contour drawing strengthens careful observation.
Which subject and chapter does this question cover?
This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Line.
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