Question

A wave travels at a speed of 0.3 ms⁻¹ and the frequency of wave is 20 Hz. Find the wavelength.

Answer 1

Wavelength = 15 millimetre

Explanation:

Speed of the wave = 0.3 m/s

Frequency = 20 Hz

Frequency of a wave is the number of times a cycle is completed in one second.  

f = c / λ where c is the wave speed c in m/s and λ is wavelength in m.

wavelength   λ = wave speed / frequency = c / f = 0.3 / 20 = 0.015 m = 15 mm

Answer 2

hlo mate ✌️

Frequency :

☞ the number of times something happens in a particular period.

Wavelength :

☞ the distance between successive crests of a wave,

Given :

Speed = 0.3 m/s

Frequency = 20 Hz

Wavelength(λ) = speed of the wave /frequency

λ = 0.2 / 30 = 0.015m

λ = 15 mm

Hope it helps ❣️