Physics
The energy stored in a watch spring is

Kinetic energy
Heat energy
Potential energy
Chemical energy

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

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