Question

Draw a diagram to show that white light can be split up into different colours. Draw another diagram to show how the colours can be combined to give the effect of white light ​

Answer 1

Therefore, these are the pictures

Answer 2

The first prism splits the white light into seven colors giving a spectrum . When these colors fall on the inverted prism, it recombines all the colors into white light which is observed ultimately as a patch of white light on the screen.