Physics
Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I.Diffusion II.Refraction III.Internal reflection

I and III
II and III
I and II
I, II and III

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Physics
The blue colour of water in the sea is due to

Reflection of blue light by impurities in sea water
Reflection of blue sky by sea water
Absorption of other colours except blue by water molecules
Scattering of blue light by water molecules

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