A glass capillary of radius 0.35 mm is incli | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The vertical height $h$ of the water column in a capillary tube is given by the formula: $h = \frac{2T \cos 	heta}{r ho g}$.Here,$T = 7 	imes

Vedclass · Accepted Answer

$8$

Vedclass · Answer

(B) The vertical height $h$ of the water column in a capillary tube is given by the formula: $h = \frac{2T \cos 	heta}{r ho g}$.Here,$T = 7 	imes 10^{-2} \ N/m$,$r = 0.35 \ mm = 0.35 	imes 10^{-3} \ m$,$	heta = 0^{\circ}$ (for glass-water contact),$ho = 10^3 \ kg/m^3$,and $g = 10 \ m/s^2$.Substituting the values:$h = \frac{2 	imes (7 	imes 10^{-2}) 	imes \cos 0^{\circ}}{(0.35 	imes 10^{-3}) 	imes 10^3 	imes 10} = \frac{14 	imes 10^{-2}}{3.5} = 4 	imes 10^{-2} \ m = 0.04 \ m = 4 \ cm$.When the capillary is inclined at an angle $\phi = 60^{\circ}$ with the vertical,the length $l$ of the water column along the capillary is given by $l = \frac{h}{\cos \phi}$.$l = \frac{0.04}{\cos 60^{\circ}} = \frac{0.04}{0.5} = 0.08 \ m = 8 \ cm$.

Similar Questions

Water rises in a capillary tube of radius $r$ up to a height $h$. The mass of water in the capillary is $m$. What will be the mass of water that rises in a capillary of radius $\frac{r}{4}$?

Two capillaries made of the same material have radii $r_1 = 1 \, mm$ and $r_2 = 2 \, mm$. If the rise of the liquid in the first capillary $(r_1 = 1 \, mm)$ is $30 \, cm$,then the rise in the other capillary will be ........ $cm$.

In a capillary rise experiment,the water level rises to a height of $5\, cm$. If the same capillary tube is placed in water such that only $3\, cm$ of the tube projects outside the water level,then

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

$A$ vertical capillary tube is filled with water up to the top after closing its lower end with a finger. If the finger is removed,we shall observe that: ($T = 70 \,\, dyne/cm$,radius of capillary $r = 1 \,\, mm$ and $g = 980 \,\, cm/sec^2$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module