Unit 1- Mechanics Chapter 2- Vectors Scalar quantity The physical quantities which have magnitude but not direction are called scalar quantities or scalar. Scalar quantities can be added or subtracted according to rule of algebra. Example: Mass, time, distance, speed, density, energy, temperature, pressure, charge, gravitational potential, electric potential energy etc. Vector quantity The physical…
Unit 1- Mechanics Chapter 3 – kinematics Static: The branch of mechanics which deals with body at rest is called static. Kinematics The branch of mechanics which deals with the study of the motion of object without taking into the account of the cause of the motion in objects. Dynamics The branch of mechanics which…
Unit 1- Mechanics Chapter 1 – Physical Quantities Measurement The process of comparing an unknown physical quantity with known fixed unit quantity is called measurement. Physical Quantity Those quantity which can be measured and can be expressed in numerical value are called physical quantity. Example : Mass, Length, Time etc A physical quantity is expressed…
Unit 5- Morden Physics Chapter 26 – Recent Trends What is the world made of? What are the most fundamental constituents of matter? Philosophers and scientists have been asking these questions for at least 2500 years. We still don’t have anything that could be called a final answer, but we’ve come a long way. This…
Unit 5 – Modern Physics Chapter 24 -Nuclear Physics Nuclear Physics: The branch of physics dealing with the study of atomic nucleus is called nuclear physics. It includes the study of properties of nucleus, nuclear phenomena, interaction of nuclei, nuclear transmutation and their application. Nucleus: Nucleus is highly dense central core of the atom where…
Unit 5- Morden Physics Chapter 25 – Solids Introduction Matter exists in nature in three states, namely solid, liquid and gas. Depending upon the nature of bond between atoms, ions or molecules, matter divided into three categories. The solids are characterized by the definite shape as well as definite volume.Depending upon the nature and arrangement…
Unit-2 CHAPTER 9 – Heat and Temperature Heat It is a form of energy which flows from body at a higher temperature to a body at lower temperature and it gives the sensation of hotness or coldness. It is also defined as sum of kinetic energy of molecule of given body. unit:- its unit is…
