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IB Physics SL C 2 3 Nature of Sound Waves Questions

Practise IB Physics SL C.2.3 by applying v = fλ and T = 1/f to wave graphs, sound measurements and resonance geometry.

Syllabus
First assessment 2025
Course
Physics SL
Level
SL

Exam points

  • Use v = fλ and T = 1/f to calculate speed, frequency or wavelength.
  • Read wavelength or period from wave graphs and report converted SI units.
  • Apply the wave equation to sound, strings, microwaves or resonance measurements.

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Study C.2.3—Nature of sound waves conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Physics SL C 2 3 Nature of Sound Waves Questions question 1

[Maximum number: 1]

This question is in two parts. Part 1 is about a thermistor circuit. Part 2 is about vibrations and waves.
Part 1 Thermistor circuit
The circuit shows a negative temperature coefficient (NTC) thermistor X and a 100kΩ100 \mathrm{k} \Omega fixed resistor R connected across a battery.

Figure for Question IB Physics SL C 2 3 Nature of Sound Waves Questions question 1 — IB Physics SL

The battery has an electromotive force (emf) of 12.0 V and negligible internal resistance.

The sound waves from the loudspeaker travel in air with speed 330 m s−1330 \mathrm{~m} \mathrm{~s}^{-1}.

Calculate the wavelength of the sound waves.

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