The presentation is meant for school level or O Level physics students

1. Physics for secondary level
Or
O-Level Physics
Volume and Density
Dr Lalit Kishore, Plenum School, HP

2. Defining volume

3. Measuring volume of irregular
objects
The volume of irregular objects
heavier and insoluble in water is
measured by displacement
method
Measuring cylinder with water is
used for displacement method

4. Displacement method procedure
 Take the measuring cylinder a few times
larger than the object
 Fill it with water so that the object gets
completely immersed
 Immerse the object in water and observe the
water level rise
 Increase in level of water in the cylinder is the
volume of the object

5. Diagram of displacement method for
irregular object heavier that water

6. Diagram for displacement method for
irregular objects lighter than water

7. Defining mass and density
 Mass is the amount of matter an object
contains or is made of
 The SI unit of mass is kg
 More concentration of matter makes an
object heavier or denser
 Density is defined as mass per unit
volume or it the ratio of mass to volume

8. Formula of density
 Unit of density is
kilogram per unit
cubic metre
 Density of water
is 1000 kg per
cubic metre
 Density of gold is
19,300 kg per
cubic metre