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This is particle phy
conservation law, also called law of conservation, in physics, a principle that states that a certain physical property (i.e., a measurable quantity) does not change in the course of time within an isolated physical system.
Exact Conservation Laws (i.e valid in every type of reaction):-
1. Conservation of Linear Momentum:- Conservation of linear momentum expresses the fact that a body or system of bodies in motion retains its total momentum, the product of mass and vector velocity, unless an external force is applied to it.
2. Conservation of Angular momentum:-Angular momentum is a vector quantity whose conservation expresses the law that a body or system that is rotating continues to rotate at the same rate unless a twisting force, called a torque, is applied to it.
3. Conservation of Charge:- total amount of electric charge in a system does not change with time.
4. Conservation of baryon number:- Sum of Baryon number on reactants side= Sum of Baryon number on products side.
5. Conservation of lepton number:- Sum of Lepton number on reactants side= sum of Lepton number on Products side.
6. Relativistic Energy:- Relativistic Total energy is conserved I.e ∆E=0.
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