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The optical phenomenon responsible for the blue colour of sky is

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CAPF 2022 Paper-1

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dispersion

reflection

refraction

scattering

Explanation:

scattering.

Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air.\
Blue light is scattered more than the other colors because it travels as shorter, smaller waves.
This is why we see a blue sky most of the time.

By: Parvesh Mehta

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