Water rise in a capillary tube when its one end is dipped vertically in it, is 3 cm. If the surface tension of water is 75×10-3 N/m, then the diameter of capillary will be

(a) 0.1 mm                          (b) 0.5 mm
(c) 1.0 mm                          (d) 2.0 mm

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Capillary rise
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A capillary tube made of glass is dipped into mercury. Then

1. Mercury rises in the capillary tube

2. Mercury rises and flows out of the capillary tube

3. Mercury descends in the capillary tube

4. Mercury neither rises nor descends in the capillary tube

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Capillary rise
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By inserting a capillary tube upto a depth l in water, the water rises to a height h ( h<l). If the lower end of the capillary is closed inside water and the capillary is taken out and closed end opened, to what height the water will remain in the tube ?

(a) Zero                              (b) l+h 
(c) 2h                                 (d) h

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Capillary rise
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If the surface tension of water is 0.06 Nm-1, then the capillary rise in a tube of diameter 1 mm is ( θ=0° )

(a) 1.22 cm                                (b) 2.44 cm
(c) 3.12 cm                                (d) 3.86 cm

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Capillary rise
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A capillary tube when immersed vertically in liquid records a rise of 3 cm. If the tube is immersed in the liquid at an angle of 60° with the vertical. The length of the liquid column along the tube is 

(a) 9cm                  (b) 6cm
(c) 3cm                  (d) 2cm

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Capillary rise
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The action of a nib split at the top is explained by

(a) Gravity flow                       (b) Diffusion of fluid
(c) Capillary action                  (d) Osmosis of liquid

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Capillary rise
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The correct relation is

(a) r=2Tcosθhdg                    (b) r=hdg2Tcosθ

(c) r=2Tdghcosθ                      (d) r=Tcosθ2hdg

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Capillary rise
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During capillary rise of a liquid in a capillary tube, the surface of contact that remains constant is of

(a) Glass and liquid                (b) Air and glass
(c) Air and liquid                    (d) All of these

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Capillary rise
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A shell having a hole of radius r is dipped in water. It holds the water upto a depth of h then the value of r is

(a) r=2Thdg                             (b) r=Thdg

(c) r=Tghd                               (d) None of these

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Capillary rise
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In a capillary tube, water rises by 1.2 mm. The height of water that will rise in another capillary tube having half the radius of the first, is 

(a) 1.2 mm                       (b) 2.4 mm
(c) 0.6 mm                       (d) 0.4 mm

Concept Questions :-

Capillary rise
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