Physics
Blowing Air with open pipe is an example of :

Adiabatic process
Isothermal process
Isochroric process
Isobaric process

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

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