The fluid property which matters for falling rain drops to acquire spherical shape is its__________________?
Correct answer: D. Surface tension
- A. Pressure
- B. Height of descend
- C. Viscosity
- D. Surface tension
Explanation
Surface tension pulls the liquid surface inward and minimises surface area, causing small falling drops to become nearly spherical. Pressure, viscosity and fall height affect the motion or deformation but do not create the spherical shape.
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