Two liquids of specific gravity `1.2 "and" 0.84 ` are poured into the limbs of a U tube until the difference in levels of their upper surfaces is 9 cm . What will be the heights of their respective surface above the common surface in U tube ? What is the pressure at the common surface ? Take `g=10"ms"^(-2)`

Two tubes of same length and diameters 4mm and 8mm are joined together to form a U-shaped tube open at both the ends. If the U-tube contains water, then the difference between the levels of water in the two lims of the tube is (Surface tension of water at the temperature of experiment is 7.3 xx 10^(-2) Nm^(-1) , angle of contact = 0^(@) , density of water = 1.0 xx 10^(3) kg m^(-3) and acceleration due to gravity = 10 ms^(-2) )

A vertical U-tube of uniform cross-section contains mercury. Through one of its limbs, some water is poured such that the mercury level in that limb goes down by 2 cm. What will be the height of the water column?

A vertical uniform U tube open at both ends contains mercury. Water is poured in one limb until the level of mercury is depressed 2cm in that limb. What is the length of water column when this happens.

A liquid of specific gravity 0.8 rises up in a capillary tube up to a height of 10 cm, while mercury falls down by 4 cm in the same tube. If the angle of contact between surface of the tube and liquid is zero and it is 135^(@) for mercury, calculate the ratio of surface tension of mercury and the liquid. Take, specific gravity of mercury =13.6 cos 135^@=-0.71

A liquid of specific gravity 1.5 is observed to rise 3.0 cm in a capillary tube of diameter 0.50 mm and the liquid wets the surface of the tube. Calculate the excess pressure inside a spherical bubble of 1.0 cm diameter blown from the same liquid.

A liquid of specific gravity 1.5 is observed to rise 3.0 cm in a capillary tube of diameter 0.50 mm and the liquid wets the surface of the tube. Calculate the excess pressure inside a spherical bubble of 1.0 cm diameter blown from the same liquid.

The acceleration due to gravity at a height ( take g= 10 ms^-2 on the earth surface ) above earth,s surface is 9 ms^-2 . It value at a point , at an equal distance below the surface of the earth is