Physics
Water will not be vapourised if

The temperature is 100°C
The humidity is 0%
The temperature is 0°C
The humidity is 100%

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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
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 same ultimate velocity

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