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PHYSICIAL QUANTITIES :                                                                        A physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed as a value, which is the algebraic multiplication of a ' Numerical value ' and a ' Unit '. For example, the physical quantity of mass can be quantified as '32.3 kg ', where '32.3' is the numerical value and 'kg' is the Unit. A physical quantity possesses at least two characteristics in common. Dimensions: A physical quantity has a certain number of dimensions, which are the basic units of measurement that are used to quantify it. For example, the dimensions of mass are length, mass, and time. Units: A physical quantity has a certain unit of measurement, which is a standard way of measuring it. For example, the unit of mass is the kilogram. Physical quantities can be classified into two types: Fundamental Quantities:  Fun

 INTRODUCTION TO PHYSICS :                                                        Physics is a branch of science that deals with the study of matter, energy, and their interactions. It seeks to explain the fundamental principles that govern the behavior of the physical universe, from the smallest subatomic particles to the largest structures in the cosmos.                The study of physics is based on observations, measurements, and mathematical models that allow scientists to make predictions about the behavior of physical systems. It covers a wide range of topics, including mechanics, electromagnetism, thermodynamics, quantum mechanics, and relativity.               The study of physics has contributed greatly to the development of technology and the understanding of the natural world. It is essential to fields such as engineering, chemistry, and astronomy, and has led to numerous technological advancements such as electricity, telecommunications, and computers. BRANCHES OF PHYSICS