Final answer:
Different sections of the subtractive color wheel appear as they do because of the absorption and reflection of specific wavelengths of light. Blue sections appear blue because they reflect blue light and absorb other colors, and yellow sections appear yellow because they reflect red and green light, which combine to form yellow light.
Step-by-step explanation:
When light shines on a subtractive color wheel composed of the primary colors red, blue, and green, various parts of the wheel will reflect light differently based on the principles of color absorption and reflection.
Part A: Which part of the color wheel will look blue?
The blue section of the color wheel will appear blue because it reflects blue light and absorbs the other colors (red and green). This happens because each color segment on the subtractive color wheel is specifically designed to absorb all other colors except the color it is meant to represent.
Part B: Which part of the color wheel will look yellow?
The yellow part of the wheel will look yellow under white light because yellow pigment absorbs blue light and reflects red and green light. When red and green light mix, they create yellow light, thus the yellow section reflects yellow light. This illustrates the concept that the perceived color of an object under white light is determined by the light it does not absorb (in this case, red and green), rather than the light it absorbs (blue).