Floating and Sinking of an object depends upon
Density of the object and liquid in which it floats
Mass of the object and volume of the liquid
Density of the object and volume of the liquid
Both a and b
Unit of relative density is
g cm-3
g cm2
g m-3
No unit
Claculate the volume of the wood of mass 6000kg when its density is 0.8 g/cm3.
4800 m3
750 m3
480 m3
7.5 m3
Mass is measured by a
beam balance
spring balance
physical balance
Both a and c
The density of a substance is 2.7 g/cm3. Find the mass of the block of this substance having volume 100 cm3?
0.27g
2700g
270g
2.7g
A piece of iron sink in water and float in mercury because
Iron is heavier than water but lighter than mercury
Iron is lighter than water but heavier than mercury
Density of water is more than Iron
All of these
The characteristics of a true beam balance are
Both the arms must be of equal length
Both the pans must be of equal masses
On lifting up the beam balance, the rod should be horizontal and pointer vertical
All of the above
To find the density of a substance, we should know its
mass and area
weight and area
mass and volume
mass and length
Relative density is the ratio of the density of the substance to the density of water at
0°C
1°C
5°C
4°C
Weight is measured by a
