PHYSICS · Single correct · A Level · Physics · Waves · Waves
Problem
Two sound waves travel through air at 340m/s. Wave X has a period of 0.80ms, and wave Y has a frequency of 1.2kHz. Which statement correctly compares their wavelengths?
(a) Wave X’s wavelength is about 4\% longer than that of wave Y.
(b) Wave Y’s wavelength is about 4\% shorter than that of wave X.
(c) Wave Y’s wavelength is about 4\% longer than that of wave X.
(d) The two waves have identical wavelengths because they move at the same speed.