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 radius of the capillary tube
Increasing the height of water in the vessel

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Physics
Stationary wave is formed by

Two waves of same frequency travelling in the same direction
A transverse wave superposing a longitudinal wave
Two waves of same frequency travelling in the opposite direction
Two waves of the same speed superposing

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