Gce Model Questions Vol1 2021 Physics Question 1
Practice objective / multiple choice question 1 from the 2021 Gce Model Questions Vol1 Physics examination.
A tuning fork of frequency 256 Hz is placed at one end of a closed cylindrical tube that resonates at its first harmonic. At 20 °C the speed of sound in air is given by \(v = 331 + 0.6T\) m s\(^{-1}\). The tube length is adjusted so that resonance occurs. The air temperature is then raised to 40 °C while the frequency of the fork remains unchanged. To keep the tube resonating at the same harmonic, what length must the tube be set to? Give your answer in metres to three significant figures.
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About This Question
This is Gce Model Questions Vol1 2021 Physics Question 1. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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