Final answer:
The question discusses how colors appear when different colors of light are shone on various objects. White light on yellow paper and yellow light on white paper both appear yellow, whereas a combination of red and green light on white paper appears yellow due to additive color mixing.
Step-by-step explanation:
The question provided seems to explore the concept of color perception and light, as it applies to Physics and the study of light. When white light shines on a yellow paper, the paper appears yellow because it reflects the yellow component of the white light and absorbs other colors. Conversely, when yellow light shines on white paper, the paper will also appear yellow because white paper reflects all wavelengths of light and the only light present to reflect is yellow.
If red and green lights shine on a white paper, the paper may appear to be a yellowish color. This is because when red and green lights mix, the result is yellow light to the human eye. Colors of light can combine in various ways to produce different perceptual experiences of color, and this phenomenon is often described by the additive color theory.
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