Q. Raindrops falling down attain limited value of velocity because of

 2626  259 COMEDKCOMEDK 2010Mechanical Properties of Fluids Report Error

Solution:

When raindrop moves downward through air, an upward drag (viscous) force acts on it. This force depends on velocity of the raindrop. After certain time, this force becomes equal to the weight of the raindrop and it falls with constant velocity.