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

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

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Physics
Why does the sea appear blue in colour?

Interference of the sun light from water surface
Reflection of the sun light from water surface
Scattering of the sunlight by water molecules
Refraction of the sun light

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