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If green letters seem to vibrate on a red background, what is the likely reason?

Answer and explanation

Correct answer: Both complementary colours are highly intense

Red and green are complementary colours in the traditional pigment colour-wheel model. When both are highly saturated and placed directly beside each other, their strong opposition can produce optical vibration, making edges appear unstable or seem to shimmer. Option A is therefore correct. They are not monochromatic, green is a secondary rather than primary colour, and red and green do not always have equal value. Reducing one colour’s intensity can improve stability.

Related tags

Secondary ColoursRed GreenVisual VibrationComplementary ColoursColour TheoryArt EducationClass 9 Mcq

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