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What is the result if the arm is fully extended at times and bent at others during pencil measurement?

Answer and explanation

Correct answer: The visual scale of measurement will keep changing

The governing concept is a fixed viewing and measuring distance. Pencil measurement depends on the relationship between the eye, the pencil, and the observed object. Extending and bending the arm changes the pencil's distance from the eye, so the apparent size of the measured interval changes from one observation to another. Thus option C is correct; local value, contour correction, and background clarity are unrelated effects.

Related tags

Object-ObservationPencil-MeasurementArm-PositionScaleObject ObservationDrawing BasicsArt EducationClass 9 Mcq

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