One end of a uniform glass capillary tube of radius r = 0.025 cm is immersed vertically in water to a depth h = 1cm. The excess pressure (in `Nm^(-2)`) required to blow an air bubble out of the tube (Given , surface tension of water `= 7 xx 10^(-2) Nm^(-1)`, density of water `= 10^(-3) k gm^(-3)` and acceleration due to gravity `= 10 ms^(-2)`)

One end of a uniform glass capillary tube of radius r = 0.025 cm is immersed vertically in water to a depth h = 1 cm. The excess pressure in N/ m^2 required to blow an air bubble out of the tube is : [Surface tension of water = 7 xx 10^(-2) Nm, Density of water = 10^3 kg m^(-3) , Acceleration due to gravity = 10ms^(-2) ]

One end of uniform glass capillary tube of radius r = 0.05 cm is immersed vertically in water to a depth h = 2 cm . The excess pressure in N//m^(2) required to blow an air bubble out the tube ( surface tension pof water = 7 xx 10^(-2) N//m , density of water = 10^(3) kg/m^(3) and g = 10m//s^(2) ).

One end ofauniform glass capillary tube of radius r = 0.025 cm is immersed vertically in water to a depth h= 1 cm. The excess pressure in Nm required to blow an air bubble out of the tube (Surface tension of water = 7xx10^-2 N m^-1 Density of water 10^-3 kg m^-3 Acceleration due to gravity = 10 ms^-2 )

One end of a glass capillary tube with a radius r=0.05cm is immersed into water to a depth of h=2cm .Excess pressure required to blow an air bubble out of the lower end of the tube will be (S.T of water =70"dyne"//cm ).Take g=980cm//s^(2) .

One end of a glass capillary tube with a radius r=0.05cm is immersed into water to a depth of h=2cm .Excess pressure required to blow an air bubble out of the lower end of the tube will be (S.T of water =70"dyne"//cm ).Take g=980cm//s^(2) .

The pressure inside an air bubble of radius 2 cm formed 20 cm below an open water surface is (Given surface tension of water = 70 xx 10^(-3) Nm^(-1) )

The pressure inside an air bubble of radius 2 cm formed 20 cm below an open water surface is (Given surface tension of water = 70 xx 10^(-3) Nm^(-1) )

(i) One end of a uniform glass capillary tube of radius r = 0.025 cm is immersed vertically in water to a depth h = 1cm . Contact angle is 0^(@) , surface tension of water is 7.5 × 10–2 N//m , density of water is rho = 10^(3) kg//m^(3) and atmospheric pressure is P_(o) = 10^(5) N // m^(2) Find the excess pressure to be applied on the water in the capillary tube so that - (a) The water level in the tube becomes same as that in the vessel. (b) Is it possible to blow out an air bubble out of the tube by increasing the pressure? (ii) A container contains two immiscible liquids of density rho_(1) and rho_(2) (rho_(2) gt rho_(1)) . A capillary of radius r is inserted in the liquid so that its bottom reaches up to denser liquid and lighter liquid does not enter into the capillary. Denser liquid rises in capillary and attain height equal to h which is also equal to column length of lighter liquid. Assuming zero contact angle find surface tension of the heavier liquid.