Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by  force due to the weight of the liquid. If the surface tension of water is , the inner circumference of the capillary must be

(a)                     (b)

(c)                       (d)

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Capillary rise
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Two capillary tubes P and Q are dipped in water. The height of water level in capillary P is 2/3 to the height in Q capillary. The ratio of their diameters is

(a) 2 : 3                           (b) 3 : 2
(c) 3 : 4                           (d) 4 : 3

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Capillary rise
High Yielding Test Series + Question Bank - NEET 2020

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A vessel, whose bottom has round holes with diameter of 0.1mm, is filled with water. The maximum height to which the water can be filled without leakage is
(S.T. of water =75 dyne/cm, g =1000 $\mathrm{cm}/{\mathrm{s}}^{2}$)

(a) 100 cm                          (b) 75 cm
(c) 50 cm                            (d) 30 cm

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Capillary rise
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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 , then the diameter of capillary will be

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

Concept Questions :-

Capillary rise
High Yielding Test Series + Question Bank - NEET 2020

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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

Concept Questions :-

Capillary rise
High Yielding Test Series + Question Bank - NEET 2020

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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

Concept Questions :-

Capillary rise
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

If the surface tension of water is 0.06 ${\mathrm{Nm}}^{-1}$, then the capillary rise in a tube of diameter 1 mm is ( $\mathrm{\theta }$=0° )

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

Concept Questions :-

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

Concept Questions :-

Capillary rise
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

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

Concept Questions :-

Capillary rise

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The correct relation is

(a) $\mathrm{r}=\frac{2\mathrm{Tcos\theta }}{\mathrm{hdg}}$                    (b) $\mathrm{r}=\frac{\mathrm{hdg}}{2\mathrm{Tcos\theta }}$

(c) $\mathrm{r}=\frac{2\mathrm{Tdgh}}{\mathrm{cos\theta }}$                      (d) $\mathrm{r}=\frac{\mathrm{Tcos\theta }}{2\mathrm{hdg}}$

Concept Questions :-

Capillary rise