A sensor records 360 complete oscillations in 0.30 s as a sound wave travels through oil. The sound wave then enters a glass window, where its speed is 4800 m/s.
Which gives the frequency of the sound wave in the glass and its wavelength in the glass?
1200 Hz1200\ \mathrm{Hz}1200 Hz and 0.25 m0.25\ \mathrm{m}0.25 m
108 Hz108\ \mathrm{Hz}108 Hz and 44 m44\ \mathrm{m}44 m
108 Hz108\ \mathrm{Hz}108 Hz and 0.023 m0.023\ \mathrm{m}0.023 m
1200 Hz1200\ \mathrm{Hz}1200 Hz and 4.0 m4.0\ \mathrm{m}4.0 m
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.