Physics
Fluid-Mechanics
Easy
Question
A liquid drop at temperature T, isolated from its surroundings, breaks into several droplets. The temperature of the droplets will be
- equal to T
- greater than T
- less than T
- either (a), (b) or (c) depending on the surface tension of the liquid
The correct answer is: less than T
Related Questions to study
Physics
PhysicsFluid-Mechanics
Physics
Work done in splitting a drop of water of 1 mm radius into 64 droplets is (Surface tension of water is 
)
Work done in splitting a drop of water of 1 mm radius into 64 droplets is (Surface tension of water is )
PhysicsFluid-Mechanics
Physics
There is an air bubble of radius R inside a drop of water of radius 3R. Find the ratio of gauge pressure at point B to that at point A.
There is an air bubble of radius R inside a drop of water of radius 3R. Find the ratio of gauge pressure at point B to that at point A.
PhysicsFluid-Mechanics
Physics
Iceberg floats in sea water with a part of it submerged. The percentage fraction of the ice berg submerged is (Density of ice 
, density of sea water 
)
Iceberg floats in sea water with a part of it submerged. The percentage fraction of the ice berg submerged is (Density of ice , density of sea water )
PhysicsFluid-Mechanics
Physics
A body weights 150 kg in air, 120 g in water and 130 g in a liquid. The density of liquid in 
is
A body weights 150 kg in air, 120 g in water and 130 g in a liquid. The density of liquid in is
PhysicsFluid-Mechanics
Physics
A steel block having an internal cavity weighs 234 g in air and 197 g in water. If the density of steel is 7 .8 g cm-3, then the volume of the cavity is
A steel block having an internal cavity weighs 234 g in air and 197 g in water. If the density of steel is 7 .8 g cm-3, then the volume of the cavity is
PhysicsFluid-Mechanics
Physics
A piece of brass (Cu and Zn) weighs 12.9 g in air. When completely immersed in water, it weighs 11.3g. Then relative densities of Cu and Zn are 8.9 and 7.1 respectively. The mass of copper in the alloy is
A piece of brass (Cu and Zn) weighs 12.9 g in air. When completely immersed in water, it weighs 11.3g. Then relative densities of Cu and Zn are 8.9 and 7.1 respectively. The mass of copper in the alloy is
PhysicsFluid-Mechanics
Physics
A 0.5 kg block of brass (density; 
) is suspended from a string. What is the tension in the string if the block is completely immersed in water?
A 0.5 kg block of brass (density; ) is suspended from a string. What is the tension in the string if the block is completely immersed in water?
PhysicsFluid-Mechanics
Physics
The volume of the hollow portion of a sphere is 
of the external volume of the sphere. If it floats in a liquid of relative density 
, half of its external volume immersed, the relative density of the material of the solid is:
The volume of the hollow portion of a sphere is of the external volume of the sphere. If it floats in a liquid of relative density , half of its external volume immersed, the relative density of the material of the solid is:
PhysicsFluid-Mechanics
Physics
Two solid pieces, one of gold and the other of silver when immersed completely in water have equal weights. When weighted in air:
Two solid pieces, one of gold and the other of silver when immersed completely in water have equal weights. When weighted in air:
PhysicsFluid-Mechanics
Physics
A raft of wood (density 600 kg / m3) of mass 120 kg floats in water. How much weight can be put on the raft to make it just sink?
A raft of wood (density 600 kg / m3) of mass 120 kg floats in water. How much weight can be put on the raft to make it just sink?
PhysicsFluid-Mechanics
Physics
A body of density d and volume V floats with volume V1 of its total volume V immersed in a liquid of density d1 and the rest of the volume V2 immersed in another liquid of density 
. The volume immersed in liquid of density d1 is
A body of density d and volume V floats with volume V1 of its total volume V immersed in a liquid of density d1 and the rest of the volume V2 immersed in another liquid of density . The volume immersed in liquid of density d1 is
PhysicsFluid-Mechanics
Physics
Two solids A and B float in water. It is observed that A floats with half of its volume immersed and B floats with 2/3 of its volume immersed. The ratio of densities of A and B is
Two solids A and B float in water. It is observed that A floats with half of its volume immersed and B floats with 2/3 of its volume immersed. The ratio of densities of A and B is
PhysicsFluid-Mechanics
Physics
The fraction of a floating object of volume V0 and density d0 above the surface of a liquid of density d will be
The fraction of a floating object of volume V0 and density d0 above the surface of a liquid of density d will be
PhysicsFluid-Mechanics
Physics
Two homogeneous solid cylinder of length from the arms of a balance. The mass of one body is 36 g and its density is 9 g/cm3 . If the mass of the other is 48 g, its density in g/cm3 is
Two homogeneous solid cylinder of length from the arms of a balance. The mass of one body is 36 g and its density is 9 g/cm3 . If the mass of the other is 48 g, its density in g/cm3 is
PhysicsFluid-Mechanics
