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What may cause visible colour differences in a poster-colour background?

Answer and explanation

Correct answer: Different mixing ratios prepared at different times

The governing concept is colour consistency through a stable mixing ratio. If a background is prepared in separate batches and the proportions of pigment, white, or water change, each batch can dry to a visibly different value, strength, or hue. Preparing enough paint at one time and mixing it thoroughly helps maintain an even field. The paper’s name, brush price, and painting title do not determine the mixture ratio. Therefore, option C is the likely cause.

Related tags

Background VariationMixing RatioPoster ColourColour ConsistencyPainting PreparationPainting TechniquesArt EducationClass 9 Mcq

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