# Wave Speed

Speed is defined as distance over time.

When it comes to waves, the distance is wavelength and the time is period.

Hence, wave speed = wavelegth / period

Since period is the inverse of frequency, the wave speed formula can be written as follows:

wave speed = frequency × wavelegth ⇒ *v = f × λ *

This formula holds for all kinds of waves including water waves, sound waves, light waves, etc.

### Exercises

### Exercise-4

*Exercise-4 on Waves *

Check your answers here:
*Solution to Exercise-4 on Waves *

### Exercise-5

*Exercise-5 on Waves *

Check your answers here:
*Solution to Exercise-5 on Waves *

### Exercise-6

*Exercise-6 on Waves *

Check your answers here:
*Solution to Exercise-6 on Waves *

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Date of last modification: Summer , 2019