Introduction
Welcome to this IGCSE Physics tutorial!
In today’s lesson, we’ll solve past physics questions commonly asked in IGCSE exams. These questions focus on forces, graphs, speed, and measurement devices — essential topics every student must master for excellent performance.
Let’s get started with the questions and answers.
Question 1: Physical Quantity Measured in Newton
Question:
Which physical quantity is measured in Newton?
Explanation
Newton (N) is the SI unit for force. It was named after Sir Isaac Newton due to his work on motion and gravitation.
- 1 Newton = the force required to accelerate 1 kg of mass by 1 m/s².
Correct Answer: Force
Question 2: Slope of a Distance-Time Graph
Question:
The slope of a distance-time graph represents what?
Explanation
- The slope of a distance-time graph is calculated as change in distance / change in time.
- This represents speed (rate of change of distance).
Correct Answer: Speed
Question 3: Acceleration Due to Gravity on Earth
Question:
What is the acceleration due to gravity on Earth?
Explanation
- The standard value of acceleration due to gravity on Earth is 9.8 m/s².
- Often approximated as 10 m/s² for calculations in IGCSE physics.
Correct Answer: 9.8 m/s²
Question 4: Average Speed Calculation
Question:
A car travels 100 km in 2 hours. What is its average speed?
Solution
Average speed = distance ÷ time 100 km÷2 h=50 km/h
Correct Answer: 50 km/h
Question 5: Device Used to Measure Electric Current
Question:
Which device is used to measure electric current?
Explanation
- Voltmeter: Measures voltage (potential difference)
- Ammeter: Measures electric current
- Galvanometer: Measures small currents
Correct Answer: Ammeter
Watch more educational videos and past questions: https://youtube.com/@allcbts
Conclusion
Understanding force, speed, and measurement concepts is vital for IGCSE Physics success. Practicing these past questions helps students master key topics and improve exam performance.
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