Physics Notes for Advanced Level (Form 5 & 6) – All Topics Covered
PHYSICS FULL NOTES ADVANCED LEVEL: Physics is the study of the relationship between matter and energy.
The people who study physics is called physicists
Physics comes from Greek word “physikos” which means “natural”.
MEASUREMENT
Measurement is the process of assigning numbers to a given physical quantity.
Physical Quantity
In describing the behavior of objects around us we have to consider to matter, space and time. A moving body covers distance with time and for an object to move energy is required. For the motion to take place, force must be applied. When an object is in the course of motion changes its speed within a given time interval we said that it is undergoing acceleration. In all this we have physical quantities which are measurable and whose values can be used in the mathematical expressions to give numerical description about the object in a question. The physical quantities are divided into two categories which are fundamental / basic quantities and derived quantities.
(a) Fundamental quantities
These are independent physical quantities such as mass, length and time. These quantities have both dimensions and standard units which can be expressed dimensionally.The dimensions of mass, length and time are represented as M, L and T respectively. The term dimension is used to denote the nature of physical quantity.
(b) Derived quantities
The physical quantities which are obtained from fundamental quantities are called derived quantities. An example of derived quantities are such as area, volume, density, speed, and momentum. These quantities can be obtained by combining the fundamental quantities in one way or the other.
PHYSICS NOTES FORM 5 – ALL TOPICS
PHYSICS NOTES FORM 6 – ALL TOPICS
PLANCK’S QUANTUM THEORY OF BLACK BODY RADIATION
The findings in the black body radiation led Max plank in 1901 to postulate that radiant energy is quantized i.e. it is radiated in form of energy packets.
BASIC POSTULATES OF THE PLANK’S THEORY
1. Any radiation is associated with
2. Radiant energy is emitted or absorbed in small packets known as quanta.
3. The energy associated with a quantum is proportional to the frequency f of the radiation
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