The density of a cuboid of mass 200 g with dimensions 2 cm $\times$ 4 cm $\times$ 5 cm is

A wire of length 50 cm has a mass of 20 gm. It its radius is halved by stretching, its new mass per unit length will be

Density of water is :

If 5 litres of kerosene has a mass of 5 kg, then what is the density of kerosene?

Two spheres are having the ratio of their densities 1:3 and masses in 3:4 respectively. Find the ratio of their volumes. i.e $\dfrac{V _1}{V _2}$

Density of air at room temperature is

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

The density of water is equal to :

Brine has a density of 1.2 g/cc. 40 cc of it is mixed with 30 cc of water. The density of the resulting solution will be

Calculate the mass of air enclosed in a room of length, breadth and height equal to $5\ m, 3 \ m$ and $4 \ m$ respectively. Density of air is $1.3 \ kg/m^3$.

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

The SI unit of density is $\displaystyle kg\ { m }^{ -3 }$. State whether true or false.

If two masses A and B have their masses in the ratio 1 : 4 and their volumes are equal, then their densities have the ratio

What is the density of an iron block which has a volume of ${12 cm^3}$ and a mass of 96g?

The ratio of the values in SI units to values in CGS units of density is

The density of water is $\displaystyle { 10 }^{ 3 }kg\ { m }^{ -3 }$. State whether true or false.

When air is cooled, its density increases. State whether true or false.

The hot air balloon rises because it is

Brine has a density of $1.2  {g}/{cc}$. $40  cc$ of it are mixed with $30  cc$ of water. The density of solution is

With the increase in temperature, the density of a substance, in general, ____________.

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

The density of a body is represented by the expression :

In order to find the density of a solid we have to first know its :

Equal volumes of iron and aluminum have different masses because they have different _________ .

 The C.G.S. unit of density is g/$\displaystyle cm^{3}$ 

_______is the characteristic property of a substance.

Equal volumes of water and kerosene have equal masses. True or false.

Density of a body depends on its shape and size. True or false.

The density of milk is 1.04 $ \displaystyle g/cm^{3} $ Therefore $ \displaystyle 1cm^{3} $ of milk has a mass of ______ g.

One kilogram of sugar has more volume than one kilogram of iron. True or false.

Weight per unit volume of a substance is called its density. State whether true or false.

The SI unit of density is __________.

Mass per unit volume of a substance is called its density. True or false.

Which of the following statements are true for density?

Multiplying relative density by 100 we get density of liquid in   $ \displaystyle kg/m^{3} $

Give reasons as to why equal masses of different substances have different volumes.

Which of the following is a fundamental property of a substance?

Define density.

Which one of the following conditions will cause the density of a liquid to decrease?

Find the odd one out

Density of a substance is defined as

From below substances which is more dense?

Which of the following is true about the density of a substance?

SI unit of density is ________ times its CGS unit.

Which of the following is true about the density of a substance?

A vessel contains oil (density $= 0.8\ gm/cm^{3})$ over mercury (density $= 13.6\ gm/ cm^{3})$. A uniform sphere floats with half its volume immersed in mercury and the other half in oil. The density of the material of sphere in $gm/ cm^{3}$ is

The heart of man pumps 5 litre of blood through the arteries per minute at a pressure of 150 mm of mercury. If the density of mercury. If the density of mercury be $13.6 \times 10^3 \ kg/m^3$ and g = 10 m/$s^2$ then the power of heart in watt is: 

State whether true or false.
An iron ball and a copper ball of same mass have the same volume.

A boat floating in a tank is carrying passenger. If the passangers drink water, how will its affect the water level of the tank?

Mass per unit volume is called ..... of a substance.

Density of water is ___________?

A tank $2\ m$ high is half filled with water and then filled to the top with oil of density $0.80\ g/cc$. What is the pressure at the bottom of the tank due to these liquids (Take $g=10\ ms^{-2}$) is

Density of ice is $\sigma$ and that of water is $\rho$. What will be the decrease in volume when a mass $M$ of ice melts 

By sucking through a straw, a boy can reduce the pressure in his lungs to $750\ mm$ of $Hg$ (density$ = 13.6\,\,g/c{m^3}$). Using a straw, he can drink water from a maximum depth of

Maximum density of $H _2O$is at the temperature

A body of density ${d _1}$ is counterpoised by $Mg$ of weights of density ${d _2}$ in air of density $d.$ Then the true mass of the body is

A $10L$ container is filled with a gas to a pressure of $2atm$ at $0^0C.$ At what temperature will the pressure inside the container be $2.50atm?$   

A copper ball of density $8.6 g cm^{-3}$, 1 cm is diameter is immersed in oil of density $0.8cm^{-3}$ . if the ball remains suspended in oil in a uniform electric field of intensity $36000 NC^{-1} $acting in upward direction, what is the charge on the ball ? 

A block of mass 20 kg and volume $ { 10 }^{ 3 }{ cm }^{ 3 }$ is suspended vertically from a ceiling by  a wire . The liner mass density of the its length  is 50 cm. The wire is vibrating in its  fundamental mode and producing beats with a tuning fork f frequency block is just completely immersed in a liquid and vibrated in its fundamental mode , it produces the same number  of beats with  earlier . Density of the liquid is $\left( g={ 10 }{ m/s }^{ 2 } \right) $

 A body of mass 20.00 g has volume $5.0 cm^3$. The maximum possible error in the measurement of mass and volume respectively are 0.01 g and$0.1 cm^3$. The maximum percentage error in the density will be nearest to 

A metallic sphere with an internal cavity weighs 40 g weight in air and 20 g weight in water. If the density of the material with  cavity be 8 g per $c{m^3}$ then the volume of cavity is:

The density of mercury is $13600 kg m^{-3} $.Its  value in CGS system will be:

A solid ball of radius R has a charge density p given by $p=p _0(1 -r/R)$ for $ 0 \leq r \leq R.$ The electric field outside the ball is:

A body of uniform cross-sectional area floats in a liquid of dentisty thrice its value. The portion of exposed height will be:

The surface density of charge on a large flat metal plate is $2.25 x { 10 }^{ 9 } coul/{m}^{2}$. The intensity of electric field at a point at a distance $20 cm$ from the plate is

A cylindrical tree has a breaking stress of $10^6\ N/m^2$. The maximum possible height of the tree is $5\ m$. the density of material of the tree is (take $g = 10\ m/s^2$)

A block of ice floats on a liquid of density $1.2$ in a beaker then level of liquid when ice completely melt.

An orifice of radius $r$ is present at the bottom of a container $r$. The maximum height to which the container can be filled with a liquid of density $\rho$ for which liquid will not come out of the orifice is?

A rectangular block 5m x 4m x 2m lies on a table with its largest surface in contact with the table. The work done to keep it so that the block rests on the smallest surface is, if its density is 600 k $m ^ { - 3 }$

When two liquid of same volume but different densities $\rho _{1}$ and $\rho _{2}$ are mixed together, then the density of the mixture is

If the length of the cylinder is measured as 25 mm, the diameter is 3.09cm and mass of the cylinder is measured as 50.0 gm find the density of the cylinder in proper significant figures.(in $gm/cm^3$)

The greatest length of the wire made of material of breaking stress $ 8 \times 10^8 N/m^2 $ and density $ 8 \times 10^3kg m^3 $ that can be suspended from a rigid support without breaking is $ ( g= 10m/s^2) $ 

A tank  $5 { m }$  high is half filled with water and then is filled to the top with oil of density  $0.85 g / c m ^ { 3 } .$  The pressure at the bottom of the tank, due to these liquids is

Suppose that a student finds that $24 \ mL$ of a certain liquid weighs $36 \ g$. What is the density of this liquid in SI unit?

Brine has a density of 1.2 g/cc. 40 cc of it is mixed with 30 cc of water. The density of the solution is:

The densities of three liquids are D, 2D and 3D. What will be the density of the resulting mixture if equal volumes of the three liquids are mixed? 

One litre of cool air weighs heavier than one litre of hot air because of the : 

$60  cc$ of a liquid of relative density $1.4$ are mixed with $40  cc$ of another liquid of relative density $0.8$. The density of the mixture is

If two masses A and B have their masses in the ratio 1 : 4 and their volumes are equal, then their densities have the ratio :

A wire of length 50 cm has a mass of 20 g. If its radius is halved by stretching, its new mass per unit length will be :

Ventilators are provided at the top of room

A vessel contains a mixture consisting of ${m} _{1}=7kg$ of nitrogen $\left( { M } _{ 1 }=28 \right) $ and ${m} _{2}=11g$ of carbon dioixide $\left( { M } _{ 2 }=44 \right) $ at temeprature $T=300K$ and pressure ${ P } _{ 0 }=1\quad atm$. The density of the mixture is:

Two non-mixing liquids of densities $\rho$ and $n \rho ( n >$ 1) are put in a container. The height of each liquids $h$ . A solid cylinder of length $L$ and density $d$ is put in this container. The cylinder floats with its its axis vertical and length $p L ( p < 1 )$ in the denser liquid. The density $d$ is equal to

Density of solid sphere is varied by $\rho = \rho _0 \lgroup 1 + \frac{r}{R} \rgroup$ where $0 \leq r \leq R$, R is the radius of the sphere. Moment of inertia of sphere w.r.t. axis passing through its centre will be : ($\rho _0$ is constant)

The blades of a windmill sweep out a circle of area $A$. If the wind flows at a velocity $v$ perpendicular to the circle, then the mass of the air of density $\rho$ passing through it in time $t$ is:

The clouds float in the atmosphere because of their low.

Sea water at frequency $\nu \  =\  4\  x\  { 10 }^{ 8 }$ Hz has permittivity $\varepsilon  \  \approx \  80\  { \varepsilon   } _{ 0 }$, permeability $\mu \  \approx \  { \mu  } _{ 0 }$ and resistivity $\rho \  =\  0.25\  \Omega m$. Imagine a parallel plate capacitor immersed in sea water and driven by an alternating voltage source V(t) = ${ V } _{ 0 }\  \sin { \  (2\pi \nu t) }$. The of amplitude of the displacement current density to the conduction current density is