Relative Density
Relative Density: Overview
This topic covers concepts, such as, Relative Density of an Object & Unit of Relative Density of an Object etc.
Important Questions on Relative Density
Madhu noted following observations in her notebook:
(i) Weight of the stone in the air
(ii) Weight of the stone in water
(iii) Weight of the stone in salt solution
The relative density of the salt solution is

What is the unit of relative density? A sealed packet of g has volume . Will it float or sink in water . Find the mass of water displaced by the packet.

Define relative density. Relative density of silver is . Find its density in SI unit if density of water is .

Find the relative density of a block which floats with rd of its volume immersed in water.

Relative density of a substance which loses N weight when immersed water is . Find the weight of substance in air.

A solid weighs in air and in water. When kept in water, state whether the object would float or sink.

A solid weighs g in air and g in water. Calculate its relative density.

Define relative density, State its mathematical formula.

Density of silver is . Calculate the relative density of silver if density of water is .


Density of turpentine at K is . Identify and write the names of substances that sink in it at same temperature.
S. No. | Substances | Density |
1 2 3 4 5 6 |
Wood Ice Rubber Paraffin wax Cork Bone |
690 920 970 900 240 1850 |

The dimensions of a wooden block are . If relative density of wood is , calculate the mass of block in kg. Density of water .

The following figure shows three identical blocks of wood floating in three different liquids A, B and C of density and respectively. Which of these has the highest density? Give reason to justify your answer.

Relative densities of two substances A and B are and respectively. Find densities A and B. Also find whether they will sink or float on water. .

A body floats on surface of water with one-third of its volume 'V' immersed in it. What is its relative density?

Relative density of an oil is . Will it float or sink in water?

Relative density of silver is . Find its density in SI units.

Relative density of aluminium is . Explain this statement.

How is relative density of a substance related to Archimedes 'principle'?

