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IB Physics HL S2.1.2 Designing Investigations Questions

Design HL investigations by selecting variables, controls, measurements and apparatus that test a relationship fairly and reproducibly.

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

Exam points

  • identify an independent variable or factor that affects the measured outcome and state a suitable range or set of values
  • choose relevant control variables such as mass, dimensions, material or initial amplitude so that only the intended factor changes
  • outline measurements and apparatus needed to collect data that can test the proposed relationship

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Study S2.1.2—Designing investigations conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Physics HL S2.1.2 Designing Investigations Questions question 1

[Maximum number: 1]

A student wants to verify the relation T=2πLgT=2 \pi \sqrt{\frac{L}{g}} between the period T of a simple pendulum and the length L of the pendulum, where g is the acceleration of free fall. The student operates a stopwatch to measure one oscillation and a millimeter ruler to measure the length of the pendulum.

State, for this experiment,

one variable that must be controlled,

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