PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics
Problem
Two sound waves, P and Q, travel through the same layer of air at 20∘C. Answer the following questions about these waves.
(i) Define (a) time period and (b) frequency of a sound wave.
(ii) The time period of wave P is twice that of wave Q. Explain, without using any numerical calculation, how the frequency of P compares with that of Q.
(iii) If both waves propagate with the same speed, explain qualitatively how the wavelength of P will compare with the wavelength of Q. State the reason for your answer.