If white light is made up of seven colour then why we black can be created with mixing all colour

If white light is made up of seven colour then why we black can be cre

1.	If white light is made up of seven colour then why we black can be created with mixing all colour
Answer» are right black light when is passed never GIVES 7 coloursonly because it is a mixture of MANY colours and colours cannot be separated as the colours are COMPLETELY mixedwhere as in a WHITE light the colours are not much combined and as we know white light it is more than black light as we GET white light from the Sun and it is an abundant resource it is easy to use white light rather than using black light

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If white light is made up of seven colour then why we black can be created with mixing all colour

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