Physics (AS & A Level) · Oct / Nov 2022 · Paper 11 · Question 21
A signal generator, amplifier and loudspeaker are used to produce different sound waves in the air of a room. The relationships between the properties of these waves are investigated. Which relationship is not correct?
- AAmplitude is proportional to wavelength.
- BFrequency is inversely proportional to wavelength.
- CIntensity is proportional to amplitude squared at a given frequency.
- DPeriod is equal to the reciprocal of frequency.
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Correct answer: A. Amplitude is proportional to wavelength.
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