Question

how many colours will make white colour?​

Answer 1

Answer:

Mixing red, green and blue together, in the right proportions, can give us white. But it turns out that mixing just two wavelengths can give us white. Just a yellow (say, 580nm) and a blue (420nm) will give us white. In fact there are lots of pairs of wavelengths that when mixed together will give white.

Explanation:

Answer 2

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✍️White colour contains seven colour.

• Rainbow colours.

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A sunlight is of white colour which makes a combination of seven colours and the Combination of these 7 colours is known as rainbow.