Question

Read the following paragraph and answer the questions given below:

Rainbow is a beautiful natural phenomenon. It is the combined effect of dispersion, refraction and total internal reflection of light. It can be seen mainly after rainfall. Small droplets of water act as small prisms. When light rays from the sun enter these droplets it gets refracted and dispersed. Then there is internal reflection and after that once again the light gets refracted while coming out of the droplet. All these three processes together produce the rainbow.

1. Which three major phenomena are responsible for rainbow formation?    (1)
2. How does refraction take place?    (1)
3. Draw a diagrammatic representation of rainbow production.    (1)

Answer 1

1. Rainbow production is caused by three major phenomena: dispersion, internal reflection, and refraction.
2. When a ray of sunlight reaches a water droplet, it is refracted as the medium transforms from air to water.
3.