admin

TOPIC 3: RADIOACTIVITY | PHYSICS FORM 4 he Nucleus of an Atom The Structure of the Nucleus of an Atom Describe the structure of the nucleus of an atom The word atom is derived from the Greek word atom which means indivisible. The Greeks concluded that matter could be broken down into particles to small … Read more

TOPIC 2: ELECTROMAGNETISM | PHYSICS FORM 4 Magnetic Fields due to a Current-carrying Conductor How Electric Current Produce a Magnetic Field Explain how electric current produces a magnetic field Electromagnetism is the effect produced by the interaction of an electric current with a magnetic field. The interaction can result in a force causing the conductor carrying … Read more

TOPIC 1: WAVES | PHYSICS FORM 4 Introduction to Waves The Concept of Wave Explain the concept of a wave A wave is a disturbance that travels through a medium from one location to another location. Consider a slinky wave as an example of a wave. When the slinky is stretched from end to end … Read more

TOPIC 9: THERMAL CURRENT ELECTRICITY | PHYSICS FORM 3 Electromotive force (emf) and potential difference (pd) The Concept of Electromotive Force (emf) and Potential Difference (PD) Explain the concept of electromotive force (emf) and potential difference (pd) Potential difference (P.d) is the difference in potential between two charged points of conductor. It is measured in … Read more

TOPIC 8: VAPOUR AND HUMIDITY | PHYSICS FORM 3 Vapour The Process of Evaporation of Liquid Explain the process of evaporation of liquid Vapours These are molecules which escape into the atmosphere after liquids are heated. When a liquid is heated strongly then molecules tends to escape ( those molecules are called vapour). Most liquids evaporates … Read more

TOPIC TOPIC 7: MEASUREMENT OF THERMAL ENERGY | PHYSICS FORM 3 Heat Capacity Heat capacity is the amount of heat required to raise the temperature of an object or substance by one degree. The temperature change is the difference between the final temperature ( Tf) and the initial temperature ( Ti). The Factors which Determine Heat Quality of … Read more

TOPIC 6: TRANSFER OF THERMAL ENERGY | PHYSICS FORM 3 Conduction The Concept of Conduction of Heat Explain the concept of conduction of Heat Conduction is the transfer of heat energy through solids, for example, metals. Generally solid substances contain particles which are close together. Each particle vibrates at one position but cannot move to another … Read more

TOPIC 5: THERMAL EXPANSION | PHYSICS FORM 3 Thermal Energy The Concept of Heat Explain the concept of heat Heat – Is the transfer of energy due to temperature differences. Temperature – Is the degree of hotness or coldness of a body. Or heat is a form of energy which raises the temperature of the … Read more

TOPIC 4: OPTICAL INSTRUMENT | PHYSICS FORM 3 Simple Microscope The Structure of the Simple Microscope Describe the structure of the simple microscope A magnifying glass, an ordinary double convex lens with a short focal length, is a simple microscope. The reading lens and hand lens are instruments of this type. When an object is placed … Read more

TOPIC 3: LIGHT | PHYSICS FORM 3 Light is a form of energy which controls the sense of vision. Reflection of Light from Curved Mirrors Difference between Concave and Convex Mirrors Distinguish between concave and convex mirrors Concave mirror is a spherical mirror whose reflecting surface is curved inwards. A Good example is the driving … Read more