Objects that produce their own light are known as luminous objects i.e. the sun, torch lamps etc. objects that do not produce their own light are called non-luminous objects i.e.… Read More »RECTILINEAR PROPAGATION AND REFLECTION AT PLANE SURFACES
Heat is transferred in matter through the following methods: conduction, convection and radiation. Conduction This is the transfer of heat in solids. The rate of conduction depends on Amount of… Read More »HEAT TRANSFER
Pressure is defined as the force acting normally (perpendicularly) per unit area . The SI units for pressure is newton per metre squared (N/m2). One Nm-2 is known as one Pascal… Read More »PRESSURE
Temperature is the degree of hotness or coldness of a body. Both Celsius scale (0C) and Kelvin scale (thermodynamic scale) are used to measure temperature. The Kelvin scale is also… Read More »THERMAL EXPANSION
Science in our lives Scientists are people trained in science and who practice the knowledge of science. We require people in industries to work as engineers, technicians, researchers, in hospitals… Read More »INTRODUCTION TO PHYSICS
MOTION Types of motion: (a) random motion (b) Translational motion (c). Rotational motion (d). Oscillatory motion (e). relative motion Causes and effects of motion. Types of Motion Definition of motion:… Read More »MOTION
CIRCULAR MOTION 1. Meaning of circular motion Definition of terms Angular velocity ii. Tangential velocity iii. Centripetal acceleration Centripetal force v. Centrifugal force vi. Period vii. Frequency Calculations on circular… Read More »CIRCULAR MOTION
MOTION 1. Force Types of forces. Friction and types. Calculations on friction. Advantages and disadvantages of friction. Ways of reducing friction. Force and the types, Friction and types Force can… Read More »Motion Part
MEASUREMENT IN PHYSICS Measurement of area and volume Concept & measurement of time and ways of measuring time. MEASUREMENT OF VOLUME Volume of liquid objects is measured using instruments such… Read More »MEASUREMENT IN PHYSICS
Concept of position, Concept of distance and displacement Distinction between distance and displacement. CONCEPT OF POSITION The position of an object is its location in space. It is usually expressed… Read More »Position, Distance and Displacement
MEASUREMENT IN PHYSICS (CONT) Measurement of area and volume Concept & measurement of time and ways of measuring time. MEASUREMENT OF VOLUME Volume of liquid objects is measured using instruments… Read More »MEASUREMENT IN PHYSICS
FUNDAMENTAL QUANTITIES AND UNITS Fundamental quantities: mass, length, time and electric charge Simple measurement of current and temperature. CONCEPT OF FUNDAMENTAL QUANTITIES Fundamental quantities are physical quantities whose dimensions and… Read More »FUNDAMENTAL QUANTITIES AND UNITS
Measurement of length Measurement of mass & weight MEASUREMENT OF LENGTH/DISTANCE Length is measured using the following instruments. (a). Metre Rule: A metre rule is a measuring device calibrated in… Read More »MEASUREMENT IN PHYSICS
Definition & Importance of Physics. Aspects/Career in Physics. Branches of physics. DEFINITION OF PHYSICS The word ‘’PHYSICS’’ originates from the Greek word, ‘’PHYSIS’’, which means nature and natural characteristics. Physics… Read More »INTRODUCTION TO PHYSICS
X-rays were discovered by a German scientist named Roentgen in 1985. They can pass through most substances including soft tissues of the body but not through bones and most metals.… Read More »X-RAYS
What is cathode rays?. These are streams of electrons emitted at the cathode of an evacuated tube containing an anode and a cathode. Production of cathode rays They are produced… Read More »CATHODE RAYS
Sources of mains electricity Mains electricity comes from a power station and its current is the alternating current which can either be stepped up or down by a transformer. A.c… Read More »MAINS ELECTRICITY
What is a Len?. A lens is conventionally defined as a piece of glass which is used to focus or change the direction of a beam of light passing through it.… Read More »THIN LENCES
Properties of waves Waves exhibit various properties which can be conveniently demonstrated using the ripple tank. It consists of a transparent tray filled with water and a white screen as… Read More »WAVES
Energy This is the ability to do work. Forms of energy. Chemical energy: – this is found in foods, oils charcoal firewood etc. Mechanical energy:- there are two types; Potential energy… Read More »ENERGY, WORK, POWER AND MACHINES