A white object emits light in all/most of the visible spectrum evenly.
Because it reflects all the light back.
white
White.
White.
Pink.
A black object absorbs light- black is actually an ABSENCE of light. White, on the other hand, REFLECTS all colors- which, when blended, produces white.
it will be black
Many objects do appear black or white when light falls on them. If they are black, it means that the object is absorbing all wavelengths of visible light and not reflecting any. If they are white, it means that they are reflecting all wavelengths of visible light and not absorbing any. The color of an object is due to the wavelengths of light that it reflects.
If the light is or contains the colour the object it is striking, then the object will appear to be the colour it originally is. If the light is not or does not contain the colour the object it is striking, then object will appear black. This is because an object will only reflect the light that is the same colour as it, all other light is absorbed. For example: Red, yellow, magenta, and white light will make a red object appear red as they all contain red light. Blue, green and cyan light will make a red object appear black.
White is the presence of all color, black is the absence of color
You really can't do exactly what you want. The closest you can get is to view an ENTIRE SCENE including this red object using a red filter, with the scene brightly illuminated (with either red or white light). Then your visual system will have no basis to assign the color red to this red object and it will appear as a shade of gray (to black or white, depending on how much light is absorbed by this object).
white shoes appear white because it reflects all 7 colours of white light when fallen on to it.Therefore if only yellow light is fallen on to this object it would give out light rays which are yellow in colour . so shoes would appear yellow.
Assuming that the light you are shining on the object is white, then the object is also blue. Objects appear a certain color because they reflect that color to our eyes and the rest of the colors in the light are absorbed by the object.