Multiple choice

Rain drop is always spherical in shape because

  1. liquid tends to possess minimum surface tension area

  2. liquid tends to possess maximum surface tension area

  3. liquid tends to possess zero surface tension area

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The shape of a drop of rain is constrained by the surface tension, which tries to give it the shape for which the surface area is minimum. For a given volume, the spherical shape has the minimum surface area. That is why rain drops acquire spherical shape.

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