Physical World and Measurement: Physical World
Physical World and Measurement: Units and Measurement
Kinematics: Motion in a Straight Line
Kinematics:Motion in A Plane
Laws of Motion
Work, Energy and Power
Motion of System of Particles and Rotational Motion
Properties of Bulk Matter:Mechanical Properties of Solids
Properties of Bulk Matter: Mechanical Properties of Fluids
Properties of Bulk Matter: Thermal Properties of Matter
Behaviour of Perfect Gases and Kinetic Theory of Gases
Oscillations and Waves: Oscillations
Oscillations and Waves: Waves
NCERT Solution , Study Material , Past Years and Practice Papers :Physical World
|Concepts of Physical World and Measurement|
|Physical World and Measurement Master File|
|Physical World and Measurement MindMap|
|NCERT Solution Physical World and Measurement|
|Physical World and Measurement: Solved Example 1|
About this unit
What is Physics?Scope and excitement of Physics,Physics technology and society,Fundamental forces in nature,Nature of Physical laws
Physics is the study of matter, basic principles and laws of nature along with their manifestations. The study of physics is mainly involved in the explanations of the diverse phenomena of its concepts.
Definition of Physical World
The physical world is referred to as the complexity in nature and solving its own complexities will give us new insights into this physical world. It is referred to as the analysis of nature conducted in order to understand how the world around us performs.
What are the Fundamental Forces of nature?
In this diverse world, the fundamental forces which govern the phenomena occurring in it are:
- Gravitational Force – it is a universal force that exists which is of mutual attraction between any two objects by virtue of their masses.
- Electromagnetic Force – is the force between charged particles. If charges are in a state of rest, it is given by Coulumb’s law whereas when they are in motion, they generate a magnetic field, hence the name electromagnetic forces as they are inseparable. They also act over a large distance as seen in the case of gravitational forces without the intervention of any medium
- Strong Nuclear Force – in a nucleus it binds protons and neutrons. It is the strongest of all the fundamental forces and is charge-independent acting between proton-proton, proton-neutron, or neutron-neutron
- Weak Nuclear Force – observed only in some nuclear processes. Example – β-decay of a nucleus. It is not as weak as the gravitational force but weaker than electromagnetic and strong nuclear force
What are the laws of conservation in nature?
The conservation laws in physics are very important when it comes to understanding the subject. The laws are:
- Laws of Conservation of Mass
- Laws of Conservation of Energy
- Laws of Conservation of Momentum
- Laws of Conservation of Charge etc