Question

Why Are There Only Seven Colours in a Rainbow?​

Answer 1

Answer:

There are only seven colours in a rainbow because only seven colours are included on the visible spectrum. While there are many more colours that are refracted when sunlight passes through a raindrop or glass prism, only seven can by seen by the human eye. These are:

The Colours of a Rainbow

1. Red (outermost)

2. Orange

3. Yellow

4. Green

5. Blue

6. Indigo

7. Violet (innermost)