I've always thought that an object appears to be of certain color X because it absorbs all other colors and reflects only X. But my current textbook(and some quick googling) tells me this is not the case.
As far as our eye is concerned, there is no difference between "yellow" and "red + green". This is because the cones in our eyes respond the same way to both of them. I guess I understand this.
But I still don't get why an yellow object would absorb only blue and reflect "red + green". Makes me wonder what's happening to all other frequencies... Appreciate any help. Thanks!
EDIT : This question is not a duplicate as I'm not asking about simple biology / physics of color. I think my question is specific : differences among "yellow", "red + green", and simple yellow reflection of an yellow object.