Conserved quantities are physical properties that remain unchanged during the course of a process or interaction. These quantities do not vary as long as the system is closed, meaning there are no external influences acting on it. In other words, they stay constant over time, even though the system may undergo various changes.
Conservation laws are fundamental principles in physics that state these conserved quantities must remain the same in an isolated system. They form the basis of much of physics, ensuring that specific quantities like energy, momentum, and charge are preserved across different processes. For instance, the conservation of energy implies that energy cannot be created or destroyed but only transformed from one form to another. Similarly, momentum conservation ensures that the total momentum in a system remains constant unless acted upon by an external force. These laws are central to understanding the dynamics of physical systems, from simple mechanical systems to complex interactions at the quantum level.
In any physical process involving the different forces, some physical quantities remain unchanged with time. Such quantities are called conserved quantities. The laws which goven the conservation of these quantities are called conservation laws.
The following are four conservations laws:
1. Law of conservation of energy.
2. Law of conservation of linear momentum.
3. Law of conservation of charge.
4. Law of conservation of angular momentum. This question related to Chapter 1 physics Class 11th NCERT. From the Chapter 1. Units and Measurements. Give answer according to your understanding.
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