Compared to the wavelength of a 400 Hz sound, the wavelength of a 200 Hz sound in air is
A. twice as long.
B. the same.
C. one-half as long.
D. none of the above
Answer:A
Compared to the wavelength of a 400 Hz sound, the wavelength of a 200 Hz sound in air is
A. twice as long. B. the same. C. one-half as long. D. none of the above