Question

Of what colours does white light consist?

Answer 1

Hint: The temperature at a given volume and the pressure of a given amount of gas are directly proportional. Pressure rises when a system's temperature rises, and vice versa. The Gay-Lussac law describes the connection between a gas's pressure and temperature.

Complete answer:
White light is a mix of all the colours in the visible spectrum. It comes in every colour of the rainbow. Violet, Indigo, and Blue are among the seven colours that make up white light. When white light with seven colours falls on a transparent medium (glass prism), each colour is refracted (or deviated) at a different angle, resulting in seven colours being spread out to form a spectrum. Secondary colours, such as yellow, cyan, and magenta, are created by combining basic light colours such as red, blue, and green. The three main colours can be broken down into numerous combinations to create all other colours.

Note: It should be noted that "magenta and green" are not suggested. That would "work" except that magenta isn't a pure colour in and of itself.
Televisions, computer monitors, smartphones, and other devices use the capacity to imitate (nearly) any colour using a proper combination of red, green, and blue.