A green light
Green light would be expected to produce the lowest rate of photosynthesis as plants primarily absorb red and blue light for photosynthesis, while green light is reflected, making it less effective for driving photosynthetic processes.
You would get a greenish color when mixing light blue and yellow.
The blue sky would appear green under green light because the green light would dominate the color seen by our eyes. The color of the sky is determined by the light that is reflected off of it, so when green light is shone on a blue sky, the green light will be the dominant color that is reflected.
a red light
A green object under green light would appear its original color and shade of green. When an object is illuminated by light of the same color, no new colors are absorbed or reflected, resulting in the object appearing unchanged.
You would expect to see the object appear cyan in color because the cyan filter would absorb most of the colors in the white light spectrum except for shades of blue and green, which combine to create cyan.
A green object under green light would appear green, as the light matches the object's color. The green light illuminates the object, causing it to reflect the same wavelength of light that it absorbs, resulting in no change in its perceived color. If the light were a different color, the object's appearance would change based on the light's wavelength and the object's ability to reflect or absorb that light.
Green.
green
A "green" object is called "green" because that's the only color of light it reflects, and it absorbs any other color. If orange light is shining on it, then there's no light for it to reflect, and it looks black to you.
The red object would appear black because it would not reflect any of the green light shining on it. Green light is the complementary color of red, meaning the object would absorb all the green light and not reflect any color back to our eyes.
green. The green is the only color not absorbed and therefor bounces off the shoe creating a green appearance