How many internal reflections of light take place in the formation of primary rainbow ?

Total internal reflection can take place when light travels from :

The phenomenon of rainbow formation by water droplets involves :

Which of the following statements with regard to the phenomenon of the primary rainbow formation by water droplets is/are correct ? 1. It involves refraction and one internal reflection of sunlight.…

Which of the following are the primary colours of light?

The nature of radiation of light is-