Question

Discuss the formation of primary rainbow and secondary rainbow

Answer 1

A rainbow is formed . Both theprimary and secondary rainbows are phenomena that formed by the reflection and refraction of sunlight in tiny water droplets. When a sunbeam is being refracted twice and reflected once by the droplet, a primary rainbow will form If the beam is being refracted twice and reflected twice, a secondary rainbow will form 

Answer 2

The primary and secondary rainbows are formed in the following ways -

• The formation process of the primary rainbow and the secondary rainbow are more or less the same. Everything happens due to the refraction and reflection of the solar rays entering the water droplets.
• The refraction process is common for both the primary rainbow formation and the secondary rainbow formation.
• The only difference between the two formation process is the number of the internal reflections of the solar rays which enter the water droplets.
• In the primary rainbow formation only one internal reflection takes place but in the secondary rainbow formation two internal reflections take place.
• Due to the two internal reflections, the secondary rainbow looks much more faded than the primary rainbow.