Short answer·Standard multi-step (3/5)·No calculator
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 sonometer, the resonating length is adjusted while the tension and linear mass density of the wire are known.
Total: 2 marks
(a) Write the formula for the fundamental frequency of the wire. (1 mark)
(b) If the resonating length decreases while tension is unchanged, what happens to the frequency? (1 mark)
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