Question

Explain the formation of rainbow in the sky with the help of a diagram. List the three phenomena involved in proper sequence.

Answer 1

Rainbow is a mixture of refraction and reflection and both phenomena must occur at the same time. Refraction occurs when light moves from one substance to another, and rays of color bend at the same time. Sunlight enters a raindrop and breaks into different colors that move in slightly different directions, the light refracts and is reflected off the back of the raindrop. When it passes back through the air again it is further refracted and causes the rainbow to appear.