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2024 · M/J · 5054/12 | Q23

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CIE-5054-2024-MJ-p12 · Question 23

You may use a calculator. Take the weight of 1.0 kg to be 9.8 N (acceleration of free fall = 9.8 m/s²).
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23 The speed of sound in air is 330m/s. Which sound is classed as ultrasound? A a sound with a wavelength of 250cm B a sound with a wavelength of 25cm C a sound with a wavelength of 2.5cm D none of the above

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5054/12/M/J/24Cambridge O Level Physics 5054 · May/June 2024 · Paper 1 variant 2 · Question 23