# SS 1 Physics (1st Term) ## VISCOSITY

MEANING OF VISCOSITY Viscosity is the internal friction which exists between layers of the molecules of a fluid (liquid or gas) in motion. The viscosity of a fluid can also… Read More »VISCOSITY ## WORK, ENERGY AND POWER

WORK Work is said to be done whenever a force moves a body through a certain distance in the direction of force.  Work done can be defined mathematically as the… Read More »WORK, ENERGY AND POWER ## PRESSURE, ARCHIMEDES’ PRINCIPLES, UPTHRUST & LAWS OF FLOATATION

PRESSURE Pressure is defined as the perpendicular force per unit area acting on a surface. It is a scalar quantity & measured in N/m2 or Pascal (pa).It can also be… Read More »PRESSURE, ARCHIMEDES’ PRINCIPLES, UPTHRUST & LAWS OF FLOATATION ## DENSITY & RELATIVE DENSITY

DEFINITION OF DENSITY The density of a substance is the mass per unit volume of the substance. Density = mass of a given substance Volume of the substance Density is… Read More »DENSITY & RELATIVE DENSITY ## VECTOR & SCALAR QUANTITY, DISTANCE/DISPLACEMENT

VECTOR & SCALAR QUANTITY, DISTANCE/DISPLACEMENT, SPEED/VELOCITY, ACCELERATION, DISTANCE/DISPLACEMENT –TIME GRAPH, SPEED/VELOCITY–TIME GRAPH SCALAR & VECTOR QUANTITY A scalar quantity is defined as a quantity that has magnitude only but no… Read More »VECTOR & SCALAR QUANTITY, DISTANCE/DISPLACEMENT ## FRICTION

DEFINITION OF FRICTION Friction (Fr) is defined as a force which acts at the surface of separation between two objects or two bodies in contact and tend to oppose the… Read More »FRICTION ## MOTION IN NATURE

FUNDAMENTALS OF MOTION Many scientists have studied motion and its properties because of its importance to life. The Italian, Galileo Galilei, who lived from 1564 to 1642, did the first… Read More »MOTION IN NATURE ## MEASUREMENT OF MASS, WEIGHT, LENGTH & TIME

TECHNIQUES AND MEASUREMENT Measurement is an important aspect of physics or other sciences. No fact in science is accepted, no law is established, unless it can be exactly measured and… Read More »MEASUREMENT OF MASS, WEIGHT, LENGTH & TIME ## INTRODUCTION TO PHYSICS

MEANING OF PHYSICS Physics is the scientific study of matter and energy and how they interact with each other. This energy can take the form of motion, light, electricity, radiation,… Read More »INTRODUCTION TO PHYSICS