A laboratory signal generator produces sound waves of four different frequencies. A student with normal hearing can only hear one of these sounds.
Which frequency of sound is the student able to hear?
15 Hz15\text{ Hz}15 Hz
18 Hz18\text{ Hz}18 Hz
12 kHz12\text{ kHz}12 kHz
24 kHz24\text{ kHz}24 kHz
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.