Density of Regular Solids

Q.

The mass of an iron rod is $52g$. The density of iron is $7.8gc{m}^{-3}$. Find the volume of the rod.

Q.

A piece of copper having an internal cavity weighs $264\mathrm{g}$ in air and $221\mathrm{g}$ in water, Find the volume of the cavity. (Take the density of copper as $8.8\mathrm{g}/\mathrm{cc}$).

Q.

A block of mass $2500kg$ has volume $5m^3$. Calculate its density in $kg{m}^{-3}$ and $gc{m}^{-3}$ ?

Q.

A block of mass $250000kg$ has a volume of $100m^3$. The density of the substance is______.

1. $2500kg/m^3$

2. $2.5kg/m^3$

3. $250000kg/m^3$

4. $250kg/m^3$

Q.

Calculate the volume of a big block of brass having mass $340\mathrm{kg}$. Density of brass $8500\raisebox{1ex}{$\mathrm{kg}$}\!\left/ \!\raisebox{-1ex}{${\mathrm{m}}^3$}\right.$.

Q.

The mass of brass ball is 210 g and its volume is 25 $c{m}^3$. Find the density of ball.

Q.

How is Cubic centimetre and cubic millimetre related to the s i unit of volume?

Q.

The mass of an object can be easily measured using a Eureka can.

1. True
2. False

Q. A piece of wood is 3 m long, 2 m wide, and has a thickness of 1 m. Find the density, if its mass is 2 kg.

1. $0.33kg/m^3$

2. $0.33kg/c{m}^3$

3. $3kg/c{m}^3$

4. $3kg/m^3$

Q. A block having dimensions $2m\times 2m\times 3m$ has mass of $24kg$. Calculate the density of the block.

1. 2

Q. If the mass of a body is $12.1g$ and the density is $2.2g/cc$, its volume is

1. $5.5{cm}^3$
2. $8cc$
3. $11cc$
4. $55cc$

Q. A block having dimensions $2m\times 2m\times 3m$ has mass of $24kg$. Calculate the density of the block.

1. 2

Q. A solid piece of lead has a mass of $23.94g$ and a volume of $2.10c{m}^3$. From these data, calculate the density of lead in SI units (kilograms per cubic meter).

Q. An iron block having dimensions $2m\times 2m\times 3m$ has mass of $24kg$. Calculate the density of the iron.

1. $2kg{m}^{-3}$
2. $1kg{m}^{-3}$
3. $3kg{m}^{-3}$
4. $4kg{m}^{-3}$

Q. State the S.I. and C.G.S. units of density. How are they interrelated?

Q. The mass and volume of a body are $4.237g$ and $2.5c{m}^3$, respectively. The density of the material of the body in correct significant figures is

1. $1.695gc{m}^3$
2. $1.69gc{m}^3$
3. $1.7gc{m}^3$
4. $1.6048gc{m}^3$

Q. Calculate the density of solid from the following data :
(a) Mass of solid = 72 g
(b) Initial volume of water in measuring cylinder = 24 ml

Q. (a) Write down an equation that defines density.
(b) $5kg$ of material A occupy $20m^3$ whereas $20kg$ of material B occupy $90c{m}^3$. Which has the greater density : A or B? Support your answer with calculations.