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) $\mathrm{r}=\frac{2\mathrm{T}}{\mathrm{hdg}}$                             (b) $\mathrm{r}=\frac{\mathrm{T}}{\mathrm{hdg}}$

(c) $\mathrm{r}=\frac{\mathrm{Tg}}{\mathrm{hd}}$                               (d) None of these

Concept Questions :-

Capillary rise
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Difficulty Level:

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
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

If capillary experiment is performed in vacuum, then for a liquid there capillary rise

(a) It will rise              (b) Will remain same
(c) It will fall               (d) Rise to the top

Concept Questions :-

Capillary rise

Difficulty Level:

If liquid level falls in a capillary then radius of capillary will

(a) Increase                     (b) Decrease
(c) Unchanged                 (d) None of these

Concept Questions :-

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

Difficulty Level:

Water rises to a height h in a capillary at the surface of earth. On the surface of the moon the height of water column in the same capillary will be
(a) 6h                           (b)$\frac{1}{6}\mathrm{h}$
(c) h                             (d) Zero

Concept Questions :-

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

Difficulty Level:

Two capillary tubes of same diameter are put vertically one each in two liquids whose relative densities are 0.8 and 0.6 and surface tensions are 60 and 50 dyne/cm respectively Ratio of heights of liquids in the two tubes $\frac{{\mathrm{h}}_{1}}{{\mathrm{h}}_{2}}$ is

(a) $\frac{10}{9}$                     (b) $\frac{3}{10}$

(c) $\frac{10}{3}$                     (d) $\frac{9}{10}$

Concept Questions :-

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

Difficulty Level:

Water rises in a vertical capillary tube upto a height of 2.0 cm . If the tube is inclined at an angle of $60°$ with the vertical, then upto what length the water will rise in the tube ?

(a) 2.0 cm                              (b) 4.0 cm
(c) $\frac{4}{\sqrt{3}}\mathrm{cm}$                             (d) $2\sqrt{2}\mathrm{cm}$

Concept Questions :-

Capillary rise
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Difficulty Level:

The surface tension for pure water in a capillary tube experiment is

(a) $\frac{\mathrm{\rho g}}{2\mathrm{hr}}$                    (b) $\frac{2}{\mathrm{\rho ghr}}$

(c) $\frac{\mathrm{r\rho g}}{2\mathrm{h}}$                     (d) $\frac{\mathrm{hr\rho g}}{2}$

Concept Questions :-

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

Difficulty Level:

In a capillary tube experiment, a vertical 30 cm long capillary tube is dipped in water. The water rises up to a height of 10cm due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes-
(a) 10 cm                             (b) 20 cm
(c) 30 cm                             (d) Zero

Concept Questions :-

Properties of fluids
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Difficulty Level:

Kerosene oil rises up the wick in a lantern

(a) Due to surface tension of the oil

(b) The wick attracts the kerosene oil

(c) Of the diffusion of the oil through the wick

(d) None of the above

Concept Questions :-

Properties of fluids