Home
Class 11
PHYSICS
A capillary tube made of glass of radius...

A capillary tube made of glass of radius 0.15 mm is dipped vertically in a beaker filled with methylene iodide (surface tension = `0.05 "Nm"^(-1) ` density = 667 kg `m^(-3)` ) which rises to height h in the tube. It is observed that the two tangents drawn from liquid-glass interfaces (from opp. sides of the capillary) make an angle of `60^(@)` with one another. Then h is close to `( g = 10 "ms"^(-2))`

A

0.049m

B

0.087m

C

0.137m

D

0.172m

Text Solution

Verified by Experts

The correct Answer is:
B
Angle of contact `= 30^@`

`h=(2Tcos theta)/(rrhog)=(2.0.05 xx(sqrt3/2))/(0.15xx10^(-3)xx667xx10)=0.087` m
Promotional Banner

Similar Questions

Explore conceptually related problems

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

The rise in the water level in a capillary tube of radius 0.07 cm when dipped veryically in a beaker containing water of surface tension 0.07 N m^(-1) is (g = 10 m s^(-2) )

A long capillary tube of radius 0.2 mm is placed vertically inside a beaker of water. If the surface tension of water is 7.2xx10^(-2)N//m the angle of contact between glass and water is zero, then determine the height of the water column in the tube.

If a capillary tube of diameter 0.4 m is dipped vertically into water, then the height to which water rises in the capillary tube will be ,

When two capillary tubes of different diameters are dipped vertically in a liquid , the rise of the liquid in the capillary tube

A capillary tube of radius 0.25 mm is dipped vertically in a liquid of density 800kgm^(-3) and of surface tension 3xx10^(-2)Nm^(-2) . The angle of contact of liquid -glass is given by costheta=0.3 If g=10ms^(-2) the rise of liquid in the capillary tube is.. Cm

When a capillary tube of radius r is dipped vertically in a liquid of surface tension T, the liquid rises to a height h in the tube above the level outside the tube . If the angle of contact is theta the density of the liquid is rho then the pressure difference between the points A and B is

A capillary tube is placed vertically inside the beaker of water of surface tension 7 xx 10^(-2) N/m and the angle of contact is 0^(@) . The height raised by the water in capillary tube 7 xx 10^(-2) m The radius of the capillary tube is

A capillary tube of radius 0.5 mm is dipped in a vessel containing water. Calculate the height to which water will rise in the capillary tube. Take, surface tension of water =7.4 xx 10^(-3)" N/m".

A capillary tube of internal radius 2 xx 10^(-3) m immersed vertically in beaker containing a liquid rising in the capillary tube is 9 xx 10^(5) kg , the surface tension of the liquid is