An object can float provided its _______ is ________ than the _______ of the liquid.
mass ,less ,mass
mass, greater ,density
density, less,density
density , less ,mass
For a floating body in a liquid, the buoyant force is acting _____________ through the centre of gravity.
vertically upwards
vertically downwards
horizontally
planar
The density of water at _________ is 1g/cm3
-4oC
0oC
Room temperature
4oC
Why does a duck float?
The weighs less than water.
The duck can swim
The duck has feathers.
The duck has smaller density than water.
The buoyant force on an object submerged in a fluid depends on
The object’s density
The fluid’s density
The acceleration due to gravity
Both fluid’s density and acceleration due to gravity
A piece of unknown material has an intricate shape. It has a mass of 126 g. You submerge it to find it displace 422 ml of water. What is the specific gravity of the piece.
0.30
3.35
1.26
0.53
Hydrometer is used for measuring _____________.
volume of a liquid
mass of a liquid
velocity of a liquid
specific gravity of a liquid
A liquid has a specific gravity of 0.357. What is its density?
357 kg/m3
643 kg/m3
1000 kg/m3
3570 kg/m3
An object is placed in a fluid. The buoyant force on the object is proportional to
The density of the object.
Density of the fluid
The volume of the object.
Both A and B
The relative density of silver is 10.8. If the density of water be 1.0 x 103 kg m-3,calculate the density of silver in SI units.
10.8 x 103 kg m-3
1.08 x 103 kg m-3
9.2 x 103 kg m-3
none of these
