Physics
If an ordinary glass tube and a glass capillary tube are both dipped in a beaker of water, water rises in

Neither
Only the glass tube
Both
Only the capillary tube

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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

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

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Physics
Why two thin shirts can keep us warmer than a single thick shirt in winter ?

Two thin shirts become thicker so prevent transmission of heat
No radiation of heat takes place
Air layer between two shirts works as good conductor
Air layer between two shirts behaves like insulating media

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