A person with normal hearing can hear sound waves that range in frequency from approximately 20...
A person with normal hearing can hear sound waves that range in frequency from approximately 20 Hz to 20 kHz (1 kHz=1 kilohertz=103 Hz). Assuming the same medium, when compared to a 20 Hz sound wave, a 20 kHz sound wave has
A. a shorter wavelength and a faster propagation speed.
B. a shorter wavelength and a slower propagation speed.
C. none of these.
D. longer wavelength and a faster propagation speed.
E. a longer wavelength and a slower propagation speed.
Homework Answers
The equation that relates wavelength and frequency for waves is:
λν=V where λ is the wavelength, ν is the frequency and V is the speed of Sound
Different frequency Waves travel at the same speed in a given medium(speed of Sound in above case), Hence high-frequency sounds(20 KHz) must have a shorter wavelength than low-frequency sounds(20 Hz).
So none of these i.e option C is correct.
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