Physics
A falling drop of rain water acquires the spherical shape due to

Atmospheric pressure
Gravitational force
Surface Tension
Viscosity

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Physics
A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by

Decreasing the radius of the capillary tube
None of these
Increasing the height of water in the vessel
Increasing the radius of the capillary tube

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