A student records measurements of the same sound wave before and after it crosses a boundary.
The table shows the results.
| Medium | Speed in m/s\mathrm{m/s}m/s | Frequency in Hz\mathrm{Hz}Hz | Wavelength in m\mathrm{m}m |
|---|---|---|---|
| P | 300 | 500 | 0.60 |
| Q | 1200 | 2000 | 2.4 |
Only one entry is incorrect. Which correction should the student make?
Change the wavelength in Q to 0.60 m0.60\ \mathrm{m}0.60 m.
Change the speed in Q to 4800 m/s4800\ \mathrm{m/s}4800 m/s.
Change the frequency in P to 2000 Hz2000\ \mathrm{Hz}2000 Hz.
Change the frequency in Q to 500 Hz500\ \mathrm{Hz}500 Hz.