Physics
Rain drops fall from great height. Which among the following statements is true regarding it?

They fall with that ultimate velocity, which are different for different droplets
They fall with same ultimate velocity
Their velocity increases and they fall with different velocity on the earth
Their velocity increases and they fall with same velocity on the earth

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Physics
The blue colour of sky is due to

Scattering of shorter wavelengths of sunlight in the atmosphere
Refraction of sunlight
Scattering of longer wavelengths of sunlight in the atmosphere
Reflection of sunlight

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