Question

What is the frequency of a wave that has a wavelength of 20cm and a speed of 10 m/s

Answer 1

λ=v/f

λ=wavelength; v=speed; f=frequency

λ=20cm (convert to m) 0.2m; v=10m/s; f=?

v/λ=f

10/0.2=f; f=50Hz

Answer 2

Step-by-step explanation:

It is known that rleation between wave speed, wavelength and frequency is as follows.

`\\u = f * \lambda`

where,
`\\u` = wave speed

f = frequency

`\lambda` = wavelength

Therefore, putting the given values into the above formula and calculate the frequency as follows.

`\\u = f * \lambda`

`10 m/s = f * 0.2 m` (as 1 cm = 0.01 m)

f = 50 per second

Thus, we can conclude that frequency of given wave is 50 per second.