Case study·Hard exam skill (4/5)·Calculator allowed
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
In a resonance tube experiment closed at one end, the first two resonance lengths for a tuning fork are and . The tuning fork frequency is .
Total: 4 marks
(a) Find the difference between successive resonance lengths. (1 mark)
(b) Find the wavelength of sound. (1 mark)
(c) Find the speed of sound. (1 mark)
(d) State the boundary condition at the closed end. (1 mark)
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