Two signal generators produce sound waves P and Q in a marine research tank. Wave P travels through water and then enters an acrylic observation window. In the acrylic, its speed is 2700 m/s and its wavelength is 1.5 m. Wave Q remains in water, where its speed is 1500 m/s and its wavelength is 0.50 m.
What is the ratio of the frequency produced by generator P to the frequency produced by generator Q?
9:59:59:5
3:53:53:5
3:13:13:1
5:35:35:3
112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.