A slight shade of burgandy
White light minus magenta light would appear cyan in color. Cyan is the complementary color to magenta, so when magenta light is subtracted from white light, the remaining color is cyan.
white
White light minus green light would appear as a purplish color. This is because when green light is removed from white light, the remaining color components combine to create a mix of blue and red light, which results in a purplish hue.
Green light - Green, White light - Green, Red light - Black
Green.
it would appear black because no red light strikes it
Red cloth illuminated by white light will reflect the red portion of the light spectrum, making it appear red.
If white light minus red light is observed, the resulting color would appear cyan or blue-green. This is because removing the red component from white light leaves behind blue and green wavelengths, which combine to create cyan.
It depends on what kind of filter, e.g. a blue filter absorbs everything except blue light, so only blue light comes out, which is why the filter looks blue, and is referred to as a "blue filter".
The white crayon would still appear white under blue light. This is because white objects reflect all colors of light equally, so the blue light would contribute to the overall brightness of the white crayon without changing its color.
A white object would appear to be red under a red light because the object reflects red light and absorbs other colors. This is because the color of an object depends on the wavelengths of light it reflects.
Banana would appear as a darker shade of yellow under a yellow light due to the way light interacts with its surface texture. The yellow light would enhance the yellow tones of the banana, making it appear richer and more vibrant.