how does the dispersion of white light take place when it passes through a glass prism?Explain.
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white light is a mixture of seven colours,when a white light passes through a prism, the seven colours split because of their variable frequency.
When a light wave passes from less dense to a denser medium, it's frequency changes.
in case of white light, the light enters as a mixture of colours, but the frequency change of each colour is different from other.
Red experiences lesser change than violet, hence violet deviates from it's path more than red.
due to this phenomenon, we can see a spectrum of light when the light emerges
When a light wave passes from less dense to a denser medium, it's frequency changes.
in case of white light, the light enters as a mixture of colours, but the frequency change of each colour is different from other.
Red experiences lesser change than violet, hence violet deviates from it's path more than red.
due to this phenomenon, we can see a spectrum of light when the light emerges
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8
Answer:
Take a prism and allow a narrow ray of light to fall on one face of it. Place a screen on the other side of the prism and observe the band of coloured patches, showing the colours formed in same order as in a rainbow. A band of colours formed in this way is called a spectrum. It has seven colours. The sequence of these colours from bottom is violet,indigo,blue,green ,yellow,orange and red
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