Final answer:
Light with a wavelength of 480 nm is blue. When a subtractive color wheel is illuminated with mixed red, blue, and green light, the blue section appears blue by reflecting blue light and the yellow section appears yellow by reflecting red and green light.
Step-by-step explanation:
The question pertains to the wavelength of light and its color. Light with a wavelength of 480 nm falls within the visible spectrum, which ranges from about 380 nm (violet) to about 750 nm (red). In the visible spectrum, a wavelength of 480 nm corresponds to the color blue. Therefore, the answer to the question 'What light will show at a wavelength of 480?' is A) Blue.
To elucidate further on color and light characteristics, when a color wheel is illuminated by light that is a mixture of red, blue, and green light:
- Part A - The blue section of the wheel will look blue because it will reflect blue light and absorb red and green.
- Part B - The yellow section of the wheel will look yellow because it will reflect red and green light and absorb blue.
A complex that appears green, for example, would absorb photons of complementary colors, which are typically the wavelengths opposite green on the color spectrum.