Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
(a) Which instrument is most suitable for the thickness of a thin sheet? (1 mark)
(b) Which instrument is most suitable for the internal diameter of a calorimeter? (1 mark)
(c) Why should the eye be kept normal to the scale while reading? (1 mark)
(d) Name one apparatus used with a simple pendulum experiment besides the bob and string. (1 mark)