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Q.

The sky appears blue due to?


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a

Reflection of light

b

Dispersion and scattering of light

c

Total internal reflection of light

d

Blue color of water droplets 

answer is B.

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Detailed Solution

Concept- When the light rays from the sun enters the atmosphere, the white light gets dispersed into its different colors that are violet, indigo, blue, green, yellow, orange and red by the drops of water in the atmosphere where the droplets act like prism and the sun’s light ray gets scattered through it.
The blue color of the light has a shorter wavelength as compared to the other colors so it gets scattered by the dust particles in the atmosphere and this is why the sky appears blue because of dispersion and scattering.
Hence, the correct option is 2.
 
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The sky appears blue due to?