Wavelength Examples in Physics
Start with the recap, study the fully worked examples, then use the practice problems to check your understanding of Wavelength.
This page combines explanation, solved examples, and follow-up practice so you can move from recognition to confident problem-solving in Physics.
Concept 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.
Read the full concept explanation →How to Use These Examples
- Read the first worked example with the solution open so the structure is clear.
- Try the practice problems before revealing each solution.
- Use the related concepts and background knowledge badges if you feel stuck.
What to Focus On
Core idea: Wavelength and frequency are inversely related for a given wave speed.
Common stuck point: Wavelength is a spatial measurement in meters, not a time measurement like period.
Sense of Study hint: When you see a wavelength problem, first check whether you are given wave speed and frequency. If so, use \lambda = v / f. If given period instead of frequency, convert first using f = 1/T. Finally, ensure all units are consistent — speed in m/s and frequency in Hz gives wavelength in metres.
Worked Examples
Example 1
easySolution
- 1 Use the wave equation: v = f\lambda.
- 2 Rearrange for wavelength: \lambda = \frac{v}{f}.
- 3 \lambda = \frac{340}{170} = 2 \text{ m}
Answer
Example 2
mediumExample 3
mediumPractice Problems
Try these problems on your own first, then open the solution to compare your method.
Example 1
easyExample 2
mediumRelated Concepts
Background Knowledge
These ideas may be useful before you work through the harder examples.