Find value of surface tension if contact angle is 0 and after lowering tube height of liquid is 15 cm and radius is 0.015 cm (density = 900 kg/`(m^3)`) (g = 10 m/`(s^2)`

If the surface tension of a liquid is 5 N/m then the surface energy of the liquid film on a ring of area 0.15 m^(2) is

Mercury has an angle of contact of 120^(@) with glass. A narrow tube of radius 1.0mm made of this glass is dipped in a through containig mercury. By what amount dies the mercury dip down in the tube relative to the liquid surface outside. Surface tension of mercury at the temperature of the experiment os 0.5 N//m and density of mercury is 13.6xx10^(3) kg//m^(3) . (Take g = 9.8 m//s^(2)) .

A capillary of radius 0.15mm is dipped in liquid of density 'rho' = 667 kg/m^3. If surface tension of liquid is 1/20 N/m then find height upto which liquid rises in capillary. Angle of contact between liquid and capillary tube is 60^@ . (g=10m/s^2)

If the liquid rises in a capillary tube of radius 0.1 mm to a height of 6 cm . The angle of contact between the glass and turpentine is 17^(@) and density of is 870 kg//m^(3) , g = 9.8 m//s^(2) . Then the surface tension of turpentine is , ( cos 17 = 0.9563)

The surface tension of water is 0.072 N/m. The height to which water will rise in a capillary tube of bore diameter 0.048 cm will be (Angle of contact of water is zero , acceleration due to gravity is 10 m//s^2 and density of water =1000 kg//m^3 ).

By how much will the surface of a liquid be depressed in a glass tube of radius 0.2 mm if the angle of contact of the liquid is 135^(@) and the surface tension is 0.547 Nm^(1) ? Density of the liquid is 13.5xx10^(3) kg m^(-3) . [ Hint: Neglecting the liquid in the meniscus we have for equilibrium pi r_(2)h rho g=2pirT cos theta,h=(2T cos theta)/(rho g r) ]

When a long capillary tube of radius 0.015 cm is dipped in a liquid, the liquid rises to a height of 15 cm within it. If the contact angle between the liquid and glass to close to 0^@ , the surface tension of the liquid, in milliNewton m^(-1) , is [rho_("liquid") = 900 kgm^(-3), g = 10 ms^(-2)] (give anwer is closet integer)

A long capillary tube of mass pi gm, radisu 2mm and negligible thickness, is partially immersed in a liquid of surface tension 0.1(N)/(m) . Take angle of contact zero and neglect buoyant force of liquid. The force required to hold the tube vertically, will be (g=10(m)/(s^2) )

When a capillary tube is immersed in ethyl alcohol whose surface tension is 20 dyne cm^(-1) , the liquid rises to a height of 10 cm. Density of the liquid is 0.8 gmcm^(-3) . If g=10ms^(-2) , the radius of the capillary tube is …mm. (angle of contact of ethyl alcohol w.r.t. glass is 60^(@) ).