Guys, i need help... can someone tell me which ones are true? pls pls pls Which three of the statements below about filters and the mixing of light colours are correct? 1. You see no light when you look at a lightbulb through a blue and red filter. 2. A yellow book looks green through a green filter. 3. If you mix blue and red light you get magenta light. 4. A green book looks yellow through a red filter. 5. If you mix yellow and blue light you get cyan light. 6. If you look at a white light through a yellow and blue filter you see no light.
Answers
Answer:
1)A filter is a transparent material that absorbs some colors and allows others to pass through. Light is the only source of color. ... But when blue light from a blue filter hits a red object, the blue will be absorbed and no light will be reflected, giving the object an appearance of being black.
2)f you pass white light through a red filter, then red light comes out the other side. This is because the red filter only allows red light through. The other colours (wavelengths) of the spectrum are absorbed. Similarly, a green filter only allows green light through.
3)When red and blue light are combined, the result is magenta. ... Red and green light make yellow. And when all three primary colors of light are combined, we see white light.
4)Red and green light have two different frequencies. Yellow light has only one frequency. And if you aim spectral yellow light at a filter that passes only the spectral frequency of yellow light, it passes through. If you aim red and green light at the same filter, nothing passes through.
5)Where the yellow and cyan overlap, we see the subtractive mixture of yellow and cyan. In other words, we see white from which yellow has subtracted blue and cyan has subtracted red. This leaves green, i.e. the subtractive mix of yellow and cyan = white–blue–red = green.
6)Light Absorption and Colour Filters. When white light shines on a red object, all of the colours that form the white light are absorbed except red, which is reflected. … A yellow colour filter will let through only yellow and absorb all other colours.
Explanation: