Why does sky appear blue?

Short/Brief Note

Blue colour of sky is due to scattering of sunlight by molecules of the atmosphere (eg. N₂, O₂)
‘λ’_b is smaller hence it scattered more strongly based on Rayleigh Scattering law.
Hence sky appears blue.

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Chapter 6 Ray Optics
Evaluation | Q 28. | Page 49

How do you obtain a spectrum of light?

Why do we see white color in Newton’s disc, when we rotate it very fast?

How are rainbows formed?

Is there any difference between coloured light obtained from prism and colours of soap bubble?

Square prism is also called a ______.

Rectangular prism is also called a ______.

Draw a figure that represents your mathematics textbook. What is the name of this figure? Is it a prism?

Name the triangular piece of glass that splits white light into different colours.

In the formation of primary rainbow, the sunlight rays emerge at minimum deviation from rain drop after ______.

How does the angle of minimum deviation produced by a prism change with increase in