- Capillarity and capillary action
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Draw a neat, labelled diagram for a liquid surface in contact with a solid, when the angle of contact is acute.
If two capillary tubes of different diameters are partially dipped in the same liquid vertically, then the rise of liquid ..........
a) is same in both the tubes
b) is more in the tube of larger ~iameter
c) will not be in smaller diameter tube
d) is more in the tube of smaller diameter
Calculate the density of paraffin oil, if glass capillary of diameter 0.25 mm dipped in paraffin oil of surface tension 0.0245 N/m rises to a height of 4 cm. (Angle of contact of paraffin with glass = 28° and acceleration due to gravity = 9.8 m/s2.)
A soap bubble of radius 12 cm is blown. Surface tension of soap solution is 30 dyne/cm. Calculate the work done in blowing the soap bubble.