Question

write how do you form a rainbow in classroom and explain the formation of rainbow in the sky using diagram

Answer 1

One can form rainbow in classroom by using a prism . Place the prism in front of an open window . Due to the sunlight, one can observe the dispersion of light through the prism. This light gets dispersed into 7 colours of rainbow.

During or after the rainfall, tiny water droplets are present in the sky , which acts like tiny prisms. So, when sunlight falls on these droplets , it refracts at the interface of the surface of the droplet. This is due to atmospheric refraction. Again the refracted ray reflects internally in the droplet. And , again the reflected rays emerges out of the droplet to form 7 constituent colours. This unables us to see the rainbow thus formed.

The following diagram can be referred ::-

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