A rainbow is one of the most beautiful light displays ever seen on the planet. A rainbow is a multicolored arc formed when light strikes water droplets. Rainbows are created after rain by the reflection, refraction, and dispersion of light in water droplets. Rainbows are formed when such phenomena produce a light spectrum in the sky.
The following are the prerequisites for the production of a rainbow:
Raindrops are present.
To see the rainbow, the sun should be behind you.
Final answer:
Rainbows are created after rain by the reflection, refraction, and dispersion of light in water droplets