GENERAL KNOWLEDGE

Detailed explanation-1: -Each colour has a different wavelength. Red has the longest wavelength, and violet has the shortest wavelength. When all the waves are seen together, they make white light.

Detailed explanation-2: -When white light strikes a white object, it appears white to us because it absorbs no color and reflects all color equally. When it strikes a colored object, this color light is reflected back. A black object absorbs all colors equally and reflects none, so it looks black to us.

Detailed explanation-3: -White light is a mixture of all colors, in roughly equal proportions. White objects look white because they reflect back all the visible wavelengths of light that shine on them-so the light still looks white to us. Colored objects, on the other hand, reflect back only some of the wavelengths; the rest they absorb.

Detailed explanation-4: -As sunlight-which is a combination of all wavelengths-hits an object, some materials will absorb specific wavelengths. The wavelengths that aren’t absorbed get reflected. This reflected light then reaches our eyes and makes us perceive the reflecting object as being a particular color.