1.when white light is shone on red ink dried on a glass plate, the color that is transmitted is red. But the color that is reflected is not red. what is it?
2.a spotlight is coated so that it won't transmit blue from its white hot filament. what color is the emerging beam of light?
3.
Answer 1: The color that is reflected is white.
Answer 2: The emerging beam of light is yellow.
1. When white light is shone on red ink dried on a glass plate, the color that is transmitted is red because the ink absorbs all the other colors of the white light, allowing only the red light to pass through. However, the color that is reflected is not red. The reflected color depends on the properties of the glass plate and could be any color other than red.
2. If a spotlight is coated to not transmit blue from its white-hot filament, the emerging beam of light will be a combination of all the colors except blue. This is because the coating on the spotlight filters out the blue light, allowing only the other colors of the spectrum to pass through. The resulting beam of light will appear as a mixture of these remaining colors.
1. When white light is shone on red ink dried on a glass plate, the color that is transmitted is red, which means the red light passes through the ink and glass and reaches our eyes. This is because red ink absorbs most of the other colors present in white light, allowing only red light to be transmitted.
However, the color that is reflected is not red. In this case, we observe the color of the light that is not absorbed by the ink and plate. Since white light contains a combination of all colors, the colors that are not absorbed by the red ink will be reflected. Therefore, the color that is reflected will be the complementary color of red, which is cyan (greenish-blue).
2. When a spotlight is coated to not transmit blue light from its white hot filament, it means that the blue light emitted by the filament is absorbed or blocked by the coating. If blue light is absorbed, then only the remaining colors of the visible spectrum will be transmitted through the spotlight.
Since the filament emits all colors of light, except blue, the emerging beam of light from the spotlight will consist of all the other colors except blue. This means the emerging beam of light will appear yellowish or yellowish-orange since yellow is a mixture of red and green.
In summary:
1. The color that is transmitted through red ink when white light is shone on it is red.
2. The color that is reflected from the red ink when white light is shone on it is cyan.
3. The color of the emerging beam of light from a spotlight coated to not transmit blue will be yellowish or yellowish-orange.