Refer to the EM spectrum to find exact answer about this question. Usually wavelengths are listed at bottom and frequency on top of the spectrum. Gamma rays have the smallest wavelength.
Red. The colour of an object is determined by the wavelengths of light it reflects and absorbs, and a white object is one that reflects light across the visible spectrum. If only red light shines on it, it will reflect that light. In contrast, a black object appears black because it doesn't reflect any visible wavelengths, so would still appear black. Any object that doesn't reflect the wavelength of light you're using (eg blue objects) would also appear black because it isn't reflecting any light.
A blue object will absorb most light except blue wavelengths of light, which it will reflect, making the object appear blue. This is because objects appear a certain color based on the wavelengths of light they reflect.
When red light shines on a red object, the object will reflect the red light and appear red. If white light shines on a red object, the object will absorb all colors except red, which it will reflect, making it appear red as well.
A blue object will appear black in red light because red light does not contain any blue wavelengths to reflect off the object's surface. Since the object does not reflect any red light, no color will be perceived.
A blue object would appear dark or almost black in magenta lights because magenta does not contain any blue light to reflect off the object, causing it to absorb most of the light.
Red. The colour of an object is determined by the wavelengths of light it reflects and absorbs, and a white object is one that reflects light across the visible spectrum. If only red light shines on it, it will reflect that light. In contrast, a black object appears black because it doesn't reflect any visible wavelengths, so would still appear black. Any object that doesn't reflect the wavelength of light you're using (eg blue objects) would also appear black because it isn't reflecting any light.
The color yellow is created by a certain wavelength of light being reflected and absorbed by an object. Objects appear yellow when they reflect light in the wavelength range of approximately 570 to 590 nanometers on the visible light spectrum.
A blue object will absorb most light except blue wavelengths of light, which it will reflect, making the object appear blue. This is because objects appear a certain color based on the wavelengths of light they reflect.
When red light shines on a red object, the object will reflect the red light and appear red. If white light shines on a red object, the object will absorb all colors except red, which it will reflect, making it appear red as well.
A blue object will appear black in red light because red light does not contain any blue wavelengths to reflect off the object's surface. Since the object does not reflect any red light, no color will be perceived.
light bounces off an object and on to the miorror surface where it is then reflected at the same wavelength as it was casted on to there with
A blue object would appear dark or almost black in magenta lights because magenta does not contain any blue light to reflect off the object, causing it to absorb most of the light.
The color of an opaque object is determined by the wavelengths of light that are absorbed by the object's surface. The color we perceive is a result of the wavelengths that are reflected back to our eyes. Objects appear a certain color because they reflect that color and absorb the rest of the colors in the visible spectrum.
A pure green object would reflect the green third of the spectrum, and absorb the red and blue portions. Magenta light is composed of red and blue waves so they would be absorbed by the green object. Therefore, in theory, a green object would appear neutral, virtually black. But this assumes that all the colors are very pure and perfectly balanced. This is unlikely, so the object would most likely look near neutral with some color skewing one way or another.
The color yellow is created when light at a certain wavelength is reflected off an object and enters our eyes. Objects appear yellow when they reflect light in the wavelength range of approximately 570-590 nanometers. This specific wavelength range triggers the perception of yellow in our brains.
An object that appears blue in white light does so because it absorbs all colors except blue, reflecting blue light. However, in green light, which does not contain any blue light, the object cannot reflect blue light and would therefore appear grey or black as it does not have any other color to reflect in the green light.
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.