#40 | Solved Problem on Capillary Rise
(Physics) > Mechanical Properties of Fluids
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Water rises to a height h in capillary tube If the length of capillary tube is above the surface of water is made less than h, then

(a) water rises upto the tip of capillary tube and then starts overflowing like a fountain

(b) water rises upto the top of capillary tube and stays there without overflowing

(c) water rises upto a point a little below the top and stays there

(d) water does not rise at all

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The meniscus of mercury in the capillary tube is

(a) Convex            (b) Concave
(c) Plane               (d) Uncertain

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The liquid meniscus in capillary tube will be convex, if the angle of contact is

(a) Greater than                                 (b) Less than 90°
(c) Equal to 90°                                  (d) Equal to 0°

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A long cylindrical glass vessel has a small hole of radius 'r' at its bottom. The depth to which the vessel can be lowered vertically in the deep water bath (surface tension T) without any water entering inside is

(a) 4T/rρg                   (b) 3T/rρg

(c) 2T/rρg                   (d) T/rρg

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Due to capillary action, a liquid will rise in a tube, if the angle of contact is 

(a) Acute                   (b) Obtuse
(c) 90°                      (d) Zero

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