Question

Performance experiment to determine the recombination of spectrum of colours to give white light.

Answer 1

first, pass a ray of white light from a prism. it will be divided into seven colours

now put an inverted prism and allow the spectrum to pass through it

a ray of white light will be obtained again

hope it will help you

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Answer 2

Recombination of spectrum colours means the combining together of seven colours of white light produced by a prism to give back the white light.