A glass tube has inner diameter of 1 mm, outer diameter of 1.1 mm. It is kept vertical and partially dipped in water. Calculate the downward pull due to surface tension.

A glass tube of internal diameter 3.5cm and thickness 0.5 cm is held vertically with its lower end immersed in water . The downward pull on the tube to surface tension (S.T.of water =0.074N//m) is

A square glass plate 4.5 cm long and 0.5 cm thick is suspended in a through containing water so that its length just touches the water surface, calculate the downward force due to surface tension acting on the plate. (Surface tension of water = 70 dyne/cm)

A glass rod of diameter d_1 =1.5 mm is inserted symmetrically into a glass capillary with inside diameter d_2=2 mm . Then the whole arrangement is vertically oriented and broght in contact with the surface of water . Surface tension and density of water are 0.075 N//m and 10^3 kg//m^3 respectively . the height throgh which the water will rise in the capillary is (g=10 m//s^2)

A capillary tube of diameter 0.6 mm dipped vertically into water. It rises to height of 6 cm in capillary tube, find the surface tension of water. (Given: density of water = 1000 kg//m^3, g = 9.8 m//s^2 ).

A wire of diameter 1 mm breaks under a tension of 1000 N. Another wire of same materials as that of the first one but of diameter 2 mm breaks under a tension of

The resistance of a wire of length 31.4 m and diameter 1 mm is 20 Omega . Find the resistivity of the material of the wire.

When glass capillary tube of radius 0.4 mm is dipped into mercury, the level inside the capillary stands 1.24 cm lower than that outside. Calculate the surface tension of mercury. (Angle of contact of mercury with glass = 135^@ , g = 9.8 m//s^2 , density of mercury = 13.6 xx 10^3 kg//m^3 )

A capillary tube of uniform bore is dipped vertically in water which rises by 6 cm in the tube. Find the radius of the capillary tube if the surface tension of water is 72 dyne/cm (g= 980 cm//s^2 ).

The tube of a mercury barometer is 1 cm in diameter. What correction due to capillarity with effect of meniscus is to be applied to barometer reading if surface tension of mercury is 435.5 dyne/cm and angle of contact of mercury with glass is 140^@ ? (density of mercury = 13600 kg//m^3 )