Practice Wavelength in Physics
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
Wavelength is the distance between two consecutive identical points on a wave, such as from one peak to the next peak or one trough to the next trough, measured in metres.
How 'long' one complete wave cycle is — the spatial size of a single repeating pattern.
Example 1
easyA wave has a speed of 340 \text{ m/s} and a frequency of 170 \text{ Hz}. What is the wavelength?
Example 2
mediumRed light has a wavelength of 700 \text{ nm} in a vacuum. What is its frequency? Use c = 3 \times 10^8 \text{ m/s}.
Example 3
easyA water wave has a wavelength of 3 \text{ m} and a period of 1.5 \text{ s}. What is the wave speed?
Example 4
mediumA sound wave has frequency 440 Hz and travels at 343 m/s. Find the wavelength.
Example 5
mediumA radio station broadcasts at 98.5 \text{ MHz}. What is the wavelength of the signal? Use c = 3 \times 10^8 \text{ m/s}.