Question

Why are red, green and blue primary colors of light whereas it should be yellow instead of green?​

Answer 1

Answer:

The ink reduces the light that would otherwise be reflected. Such a model is called subtractive because inks "subtract" the colors red, green and blue from white light. ... In additive color models, such as RGB, white is the "additive" combination of all primary colored lights, while black is the absence of light.

Answer 2

The reason we use RGB to reproduce color is not because the colors 'Red', 'Green', and 'Blue' are somehow intrinsic to the nature of light. They aren't. We use RGB because trichromatism¹ is intrinsic to the way our eye/brain systems respond tolight