How we can know that white light consist of 7 colours(VIBGYOR)?

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Dr Sheelan Sengupta Chowdhury

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Pass a white light through a prism. If you place a screen at the other side of the prism you will find the seven colours
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labhome

formation of rainbow,scattering of light and dispersion of light topics
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B.tech

Use the prism..
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Experienced Mathematics com ECE Educator

we can prove White Light consist of 7 colour from Newton disc
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Educationist

When white light is passed through a prism, you will see a spectrum of 7 different colours
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By Dispersion phenomenon of light, we can find the 7 different colours of white sun light.
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Master in Physics, Computer Science, Management, Mass Communication

You can view this phenomenon by using a PRISM. Place the PRISM is such a position so that the Sun rays incident on it. You will see 7 colours (VIBGYOR) when the Sun rays will pass through it. This phenomenon can also be seen sometimes during the Rainy season when clouds create a PRISM type shape.
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By passing the white light through a prism
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when light is passed through a medium it splits into seven colors. like when enters the moist air during the rainy season, it splits and one visibly observe the colors.
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