Physics
Total internal reflection can not take place when light goes from :

Water to air
Water to glass
Glass to air
Glass to water

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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
Increasing the height of water in the vessel
None of these

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