An acoustic transmitter emits a progressive longitudinal wave of frequency 5.0 kHz5.0\text{ kHz}5.0 kHz that travels through seawater at a speed of 1500 m s-1.
Which statement correctly describes the motion of a medium particle in the path of this wave?
It oscillates with a time period of 0.10 ms0.10\text{ ms}0.10 ms.
It changes its direction of motion 5000 times every second5000\text{ times every second}5000 times every second.
It travels through the medium at a constant speed of 1500 m s−11500\text{ m s}^{-1}1500 m s−1.
It oscillates in antiphase with a particle in the wave 15 cm15\text{ cm}15 cm away.
25 exam-style questions on AQA A Level Physics Progressive and stationary waves, covering Progressive waves, Longitudinal and transverse waves, and Principle of superposition of waves and formation of stationary waves. Each one has a worked solution and a mark scheme showing where the marks go.