Fire engines used to be red, Yellow-green is now the preferred color. Why the change?

Q: Which one of the following colors of visible light has the highest frequency? Yellow. Red. Green.…

A: The visible light spectrum arranged in the order of increasing frequency is given by…

Q: What color(s) is (are) absorbed when blue pigment has yellow light shone on it?   a) red and green…

A: If blue pigment has yellow light shone on it

Q: At noon the sun appears white as a) light is least scattered b) all the colours of the white light…

A: In order to reach the earth through the atmosphere, light has to travel a shorter distance only…

Q: What do the various colors displayed in the flame of burning log represent?

A:

Q: Why is the color of the clear sky is blue?

A:

Q: Why do soap bubbles show glints of random colors?

A: The white light consists of all the colors and when it falls on soap bubble which can be considered…

Q: A swatch of pure red fabric is viewed through a green filter. The fabric appearsA. Red.        B.…

A: Red is a combination of yellow and magenta. In order to reflect yellow and magenta color, these…

Q: Which colour results when yellow, cyan and magenta colours are subtracted from a white colour?

A: The secondary colours of light are formed by mixing primary colours which are namely Red, Green and…

Q: B

A:

Q: Which statement correctly explains why white objects look white and black objects look black? O a Ob…

A: The colour of an object depends on which colour the object reflects when white light is incedent on…

Q: The colored wings of many butterflies are due to pigmentation, but in others, such as the Morpho…

A: The colored wings of morpho-butterflies are due to the iridescence.

Q: Look at your red , sunburned feet when they are under water. Why don’t they look as red as they are…

A: Ray of light coming from red wound will undergo scattering and refraction both at water surface.

Q: A series of yellow, green, and blue coloured glass plates are arranged in a light beam. Each glass…

A: Consider a light ray falling on a series of yellow, green, and blue coloured glass plates with a…

Q: Why will the leaves of a red rose be warmed more than the petals when illuminated with red light?

A: The petals of a red rose reflect all the red light coming from the source, whereas the leaves absorb…

Q: White light passes through a green filter and is observed on a screen. Describe how the screen will…

A: Color of screen

Q: give an example of wave characteristic of light that is easily observed outside the laboratory

A: Light: It is a transverse, electromagnetic wave which helps us to see. The wave nature of light was…

Q: why red and cyan colours are called complimentary colours?

A: A colour which on mixing up with another colour gives white or black colour is called the…

Q: explain why the sky is blue and sunsets mostly red, orange and yellow.

A: The scattering of a beam of light by a medium containing small suspended particles is known as the…

Q: Water on a clean glass plate spreads into a thin film but a small amount of water placed on a flat…

A: There exists cohesive force between the water molecules and adhesive force between the water and the…

Q: What is the effect on the color of a cloud when it contains an abundance of large droplets?

A: The sunlight scattering the droplets in absorb most of the light.

Q: Fire engines used to be red, Yellow-green is now the preferred colour.Why this change occured?

A: Red color appears black in the night, but the brightness of yellow green color does not fade in the…

Q: Why does the arc of a rainbow appear with red on top andviolet on the bottom?

A: Answer

Q: Why is red paint red?

A: Red ochre is a simple compound composed of iron and oxygen which gives the colour to the paint.

Q: Assume the light wave directed at the paper is white light and the paper contains pigments that…

A: Here the pigments absorb the wavelength of red ,orange,yellow,blue,indigo,violet. And we know that…

Q: What color does blue and yellow make?   A) Green B) Black C) Red D) White

A: Mixing of different colors combination is as given below:

Q: What is the reason why a green colored shirt looks green?

A: An object color appearance depends on the wavelengths of light which reflected by the object to an…

Q: If the sunlight were somehow green instead of white, what color clothing would be most advisable on…

A: If the sunlight were somehow green instead of white, then on a very hot day green colored clothes…

Q: Red sunrises occur for the same reason as red sunsets. But sunsets are usually more colorful than…

A: The light rays coming from the sun toward earth either scattered or transmitted from the Earth’s…

Q: When you look at a shirt and it is blue…. WHY IS IT BLUE? What is being absorbed and what is being…

A: What colour our eye see is the reflected colour which an object reflects. Rest of the colours are…

Q: why are red , green and blue called the additive primary colours?

A: Additive primary colours are the primary colour elements that make up white light. These colours are…

Q: What color is reflected from a surface that is painted with a mixture of cyan and magenta paint?…

A: solution is given as

Q: Tennis ball used to be white, what is the color preferred nowadays and why?

A: At present, tennis balls are yellow-green color and this is because this color is more sensitive to…

Q: The three colors that comprise the image of full-color photos are    options:   red, green, and…

A: The correct option is, d) Magenta, Cyan, Yellow

Q: Choose the correct statement. For light, we can call white a tertiary color because RED + BLUE +…

A: White and black are not primary colours . They are used to make light or dark shades of other…

Q: Which of the following colors indicates an object of the lowest temperature? (A) Violet (B) Blue (C)…

A: Answer:- (B) Blue    Blue colors indicate an object of the lowest temperature.    Because    In any…

Q: Explain why we see distant mountains as blue green in color instead of seeing it as green?

A: The sky is blue because the air in the atmosphere scatters blue light.

Q: Describe the resulting colors when the following lights are mixed together: Red and blue light…

A: Answers  1. Magneta 2. Cyan 3. Black

Q: Choose the BEST answer to the following: Black is the combination of (a) all the colors together.…

A: The black colour is formed when an object absorbs the radiation of all the colors, as an ideal black…