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Exercise 1
GCE O-Level 2018.
GCE O-Level 2019.
GCE O-Level 2020.
GCE O-Level 2021.
GCE O-level 2023
GCE O-level 2024
Select Lessons (41)
Dynamics: Newton’s Laws of Motion
ELECTRICITY : ELECTROMAGNETISM - Alternating Current
ELECTRICITY : ELECTROMAGNETISM - Current in a Magnetic Field
ELECTRICITY : ELECTROMAGNETISM - Electromagnetic Induction
ELECTRICITY : ELECTROMAGNETISM - Magnets
ELECTRICITY : Electric Current I
ELECTRICITY : Electrostatics
ELECTRICITY : MODERN PHYSICS - The Electron (Electronics)
ELECTRICITY : WAVES - Light
ELECTRICITY : WAVES - Vibrations and Sound
ELECTRICITY: Current
Energy: Application And Uses
Forces
HEAT : TEMPERATURE - Concept of Heat and Temperature
HEAT : TEMPERATURE - Heat Capacity
HEAT : TEMPERATURE - Heat Transfer
HEAT : TEMPERATURE - Thermometers
HEAT : TEMPERATURE - Thermometric Properties
Health Education
Linear Momentum
MECHANICS : ENERGY - Forms of Energy
MECHANICS : ENERGY - Machines
MECHANICS : ENERGY - Power
MECHANICS : ENERGY - Work
MECHANICS : FORCES - Moments
MECHANICS : FORCES - Newton’s laws of Motion
MECHANICS : FORCES - Physical quantities
MECHANICS : FORCES - Types and characteristics of forces
MECHANICS : FORCES - Vectors and Scalars
MECHANICS : MOTION - Conservation of Linear Momentum
MECHANICS : MOTION - Linear Motion
MECHANICS : PROPERTIES OF MATTER - Density
MECHANICS : PROPERTIES OF MATTER - Hooke’s Law
MECHANICS : PROPERTIES OF MATTER - Pressure
MOTION
Matter: Its Properties & Transformation
PRESSURE
Radioactivity
WAVES: Electromagnetic
5/31 MCQs for:
MECHANICS : ENERGY - Machines
What does the efficiency of a machine indicate?
How much work is done by the machine.
The ratio of useful work output to the total energy input.
How much energy is wasted in the machine.
The amount of energy required to operate the machine.
If a machine has an efficiency of 60%, and 100 J of energy is supplied to it, how much useful energy is output?
10 J.
100 J.
40 J.
60 J.
What is the formula for calculating mechanical advantage (MA)?
MA = (Output work / Input work).
MA = (Effort distance / Load distance).
MA = (Output force / Input force).
MA = (Input force / Output force.
Which of the following is a typical use of a pulley in a building site?
To change the direction of force without changing its magnitude.
To lift heavy materials to a higher point.
To amplify the force required to move a load.
To reduce friction in moving parts.
What is the main purpose of using an inclined plane?
To transfer energy.
To reduce the force required to lift an object by spreading the work over a larger distance.
To change the direction of the applied force.
To increase the force required to move an object.