Question

4. Mention the reason for the following phenomena:
i) Dispersion of light
ii) Twinkling of stars
iii) Tyndall effect
iv) Blue colour of the sky.​

Answer 1

Answer:

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Explanation:

1)Dispersion of light:Difference in speed in medium for different wavelengths/colours of light

2)Twinkling of stars:Atmospheric refraction

3)Tyndall effect: scattering of light by colloidal particles

4)Blue colour of the sky: Atmospheric scattering