Surface tension || Contact angle

Surface tension is

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)

Two parallel glass plates are dipped partly in the liquid of denstiy 'd' keeping them vertical. If the distance between the plates is 'x', Surface tension is T and angle of contact is theta then ries of liquid between the plates due to capillary will be

When the temperature of a liquid is increased , following changes take place in the surface tension (T) and angle of contact (theta)

Check the correctness of the relation h =(2 sigma cos theta)/(r^2 dg), where h is height , sigam is surface tension, theta is angle of contact, r is radius, d is density and g in acceleration due to gravity.

A capillary tube of inner diameter 0.5 mm is dipped in a liquid of specific gravity 13.6 and having surface tension 545 dyn/cm(angle of contact 130^(@) ) . Find the depression or elevation in the tube .

Define surface tension and angle of contact.

A mosquito with 8 legs stands on water surface and each leg makes depression of radius 'a'. If the surface tension and angle of contact are 'T' and zero respectively, then the weight of mosquito is: