Question

It is possible to enjoy a rainbow at fountains in any season. Give reasons.

Answer 1

Hint: We know that the formation of a rainbow involves three important processes that are refraction, dispersion, and total internal reflection. Dispersion states the splitting of light into its component colors as it passes through a medium. When there is no rain a fountain can serve as a source of fine droplets.

Complete answer:
The answer is yes, we can enjoy the rainbow at fountains in any season. Because the rainbow is a combined result of refraction, dispersion, and reflection of sunlight by water droplets which are present in the atmosphere after rain. When there is no rain a fountain can serve as a source of fine droplets, these water droplets in the sunlight can produce a rainbow. So, it is possible to enjoy a rainbow at fountains in any season.
The formation of a rainbow depends on water droplets and sunlight. Usually, a rainbow can be seen when the sun comes out just after rain or when both sun and rain come together.
The main reason for formation of a rainbow, lights of different wavelengths bends differently when they pass through a water droplet this phenomenon is known as dispersion. A Rainbow is a color full band that appears in the sky due to the dispersion of sunlight by passing through water droplets.
In general, we say a rainbow is formed when white light from the sun passes through water droplets present in the sky.

Note:
When every droplet makes an angle between ${40^ \circ }$and ${42^ \circ }$ then they will emit the light towards us. So, the rainbow does not form at any particular place. Rather it is formed everywhere.