Question

Multiple choice

A set of water waves travels at 20.0 m/s , and 4.0 waves pass you in 2.0 s. What is the wavelength of the waves?



5.0 m



10 m



0.20 m



2.5 m

Answer 1

10m

Step-by-step explanation:

In 2 s four waves travel so

for a wave to travel it will take 0.5s

but Velocity of wave = Wavelength × Frequency

Frequency = 1/Period

f=1/0.5s

f=2Hz

so Wavelength = 20ms-1 /2 Hz

= 10 m