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Q.

What are the primary colours of light?


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a

Red, blue, cyan

b

Green, blue, red

c

Red, magenta, blue

d

Green, blue, yellow  

answer is B.

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Detailed Solution

Green, blue, and red are the primary colours of light.
They were the essential components required to produce pure, white light, Newton designated those three hues as the "primary" colours. According to Richard Raiselis, Associate Professor of Art at Boston University School of Visual Arts, additive colours are those that produce more light when combined with each other.
 
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