Color Theory and Symbolism

An object looks red when seen through apiece of red glass, hence the color of object is red as it doesn't matter what color the glass is as the refractive index of the medium is constant, hence the object will look of its original color.

The color of light coming through a filter is specific to the filter.for example blue filter will allow only blue rays to pass through it.

Color of an object visible to us is independent of the color of light incident on it. Hence a green leaf will look green even if yellow light is incident on it.

It is a transparent medium rest all are translucent

Specific colours are used for road markings-
I) White for all carriageway makings except for parking restrictions.
II) Yellow for parking restrictions and continuous centre or barrier line.
III) Alternate Black & White for kerb and object makings.

Red, Green, Yellow color combinations are used as signal lights. Red as the color for stop, it is thought, because red has for centuries been used to indicate danger. For the other colors, they chose green as the color for go and yellow as the color for caution.

Adding a front white headlight and a rear red taillight makes you more visible from a distance. A larger amount of power for the light will help you to be even brighter and more noticeable.

Traffic signals are of three colours, which are Red, Green and Amber.
I) Red means stop
II) Amber means caution
III) Green means go

• Quaternary services represent a special type of service work focussing on professional and administrative services. These activities include financial and health services, information processing, teaching and government services, and entertainment services. Almost all activity related to quaternary services takes place in the office building environments or specialized environments like those provided by schools, hospitals, hotels, theatres, etc. People engaged in these activities are called white-collar workers.

When red coloured marbles are put inside the blue coloured vase, it will appear black because when light is incident on blue coloured vase which is transparent (Glass), it absorbs all the colours of white light except blue, and when blue colour tight incident on red marbles It will absorb blue colour and no light will be emitted by it. So it will appear black.

The hottest part of the flame is the tip of the inner flame which is violet in colour, while the coolest is the whole inner flame.

White light is made up of seven colors namely Violet, Indigo, Blue, Green, Yellow, Orange, Red commonly remembered by using the acronym VIBGYOR. 

The primary colors of pigment are used when producing colors from reflected light; for example, when mixing paint or using a color printer. The primary colors of pigment are Magenta, Yellow, and Cyan. 

Hence, the correct answer is OPTION B.

Red light has the longest wavelength in the visible spectrum, which results in the lowest refractive index and the minimum deviation (dispersion) when passing through a prism.