Question 3
Rainbow is a multi-coloured arc resulting from spectrums of lights. It is one of the most beautiful natural phenomenon on Earth. Normally, it can be seen easily whenever there are water droplets and sunlight shining from behind. Reflection and refraction of light help the formation of this optical phenomenon.
Arrange the sequence of the colour of the rainbow according to their respective wavelength.

Arrange the sequence of the colour of the rainbow according to their respective wavelength.
