Water in a clean aquarium forms a meniscus, as illustrated in the figure. The difference in height h between the centre and the edge of the meniscus will be (surface tension of water = 0.02 N/m. density of water = 1000 kg/m", g = 10 m/s) (1) 1 mm (2) 2 mm (3) 3 mm (4) 4 mm

Water in a clean aquarium forms a meniscus as shown in the figure CalcuIate the difference in height (h) between the centre and edge of the meniscus .Give the surfacetension of water T 0.073 $N{m}^{-1}$ , density of water p= 1000 kg$m^{-3}$

glass U-tube is inverted with open ends of the straight limbs, of diamters 0.5 mm and mm below the surface of water in a beaker. The air pressure in the upper part is reased until the meniscus in one limb is level with the water outside. The height of are in the other limb will be: (Density of water is $${ 10 }^{ 3 }{ kg/m }^{ 3 }$$ and surface tension of water $$5\times { 10 }^{ -3 } N/m.$$ Take contact angle $$\theta ={ 0 }^{ \circ })$$

If a $10\text{cm}$ long capillary tube with $0.2\text{mm}$ internal diameter open at both ends is slightly dipped in water having surface tension $80\text{dyne/cm}$, then:
[$g=981{\text{g/cm}}^2$]

A capillary tube of radius $0.25$ $mm$ is submerged vertically in water so that $25$ $mm$ of its length is outside water. The radius of curvature of the meniscus will be (ST of water $=75\times {10}^{-3}$ ${Nm}^{-1})$