Question

A device that can be used to show that the different colours of the spectrum combine to give white light.

Answer 1

Prism is tge device that can be used to show that the diff colours of the spectrum combine to give white light.

Answer 2

Thanks for your question !

Your answer is - Prism.
     Prisms do show spectrum of different colours which if combined, give white colour. Those colours are - VIBGYOR. (Violate, Indigo, Blue, Green, Yellow, Orange, Red).