What is the band of seven colours dispersed by a glass prism called?
Answers
Answer:
Dispersion is the splitting up of white light into seven colors on passing through a glass prism. When white light is passed through a prism, a band of seven colors are formed also known as spectrum. The seven colors in the spectrum are red, orange, yellow, green, blue, indigo and violet respectively.
Answer:
Spectrum of white light: The band of seven colours formed when a beam of white light is passes through a glass prism is called spectrum of white light.
Dispersion of light: The splitting of white light into seven colours on passing through a transparent medium is called dispersion of light.
The dispersion of white light happens because the angle of refraction of lights of different colours is different while passing through the transparent medium. For example, red colour deviates least and is formed at the upper part of the spectrum and violet colour is deviated maximum and is formed at the bottom of the spectrum.