how many types of rainbow

how many types of rainbow

1Rainbow
2.secondary Rainbow

1.Primary rainbow

Primary rainbow is formed by one total internal reflection and two refraction of ray of light from water droplets
i. It is brighter than secondary rainbow
ii. It subtends an angle of 42°at the eye.
iii. It shows all the colour of the solar spectrum with red colour outside and violent colour inside.

Diagram:

Primary ranbow

Secondary rainbow

Secondary rainbow is formed by two total internal reflection and two refraction of ray of light from water droplets.
i. It is, not as bright as primary rainbow
ii. It subtends an angle of 52.2°at the eye.
iii. It show all the colour of solar spectrum with voilet colour outside and red colour inside.

Diagram:

Secondary rainbow