Question

how can you say that the white light consist seven colour
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Answer 1

You can see that the light reflected on the wall has several colors. The prism splits the white light into seven different colors. This splitting of white light into many colors is called as a dispersion of light. This shows that the sunlight consists of several colors.

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Answer 2

Answer:

Dispersion of light

In 1665, Isaac Newton discovered that white light consists of seven colours. He found that if a beam of white light is passed through glass prism then it will split in to seven colours. These colours are red, orange, yellow, green, blue, indigo and violet (VIBGYOR).

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