Edexcel IGCSE Physics 3.24P Human hearing range
Practise applying the 20 Hz to 20 000 Hz human hearing range to frequencies, graphs and real situations where sounds are inaudible.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- state the human hearing range as 20 Hz to 20 000 Hz, or 20 Hz to 20 kHz
- use a graph or given frequency to decide whether a human can hear a sound
- explain why sounds above 20 kHz or below 20 Hz are not heard by humans
3.24P Human hearing range question 1
Magnetic Resonance Imaging (MRI) machines can take scans of the inside of a patient.
During the scan, music can be played through a loudspeaker to the patient.
The oscilloscope trace in the diagram represents a sound played to the patient.
Deduce whether humans can hear the sound wave.
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