What an object does to light so we see it

Asked by admin @ in Physics viewed by 227 People

The color of an object that the human eye senses depends on the color of light that shines on the object and the color of light that is reflected or absorbed by the object. If white light shines on an object and the object appears blue, this means that

A. the object absorbs all light that strikes it.
B. the object reflects blue light more than it does any other color.
C. the object reflects all light that strikes it.
D. the object absorbs blue light more than it does any other color.

Answered by admin @


Answer:

B. the object reflects blue light more than it does any other color.

Explanation:

The color of an object as we see it corresponds to the wavelength of the light that the object reflects.

Let's consider an object on which white light is shone, as in this problem. If the object absorbs all the possible wavelengths of visible light, the object will not reflect any colour, so it will appear black. However, if the object reflects at least one color, the light of that color (reflected by the object) will reach us, so we will see the object in that color.

Therefore, in this problem, the object appears blue because it reflects blue light more than the other colors.


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