Question

The wavelength of waves produces on the surface of water is 20 cm. If the wave velocity is 24 m s^-1, calculate:

1. the number of waves produced in one second, and
2. the time in which one wave is produced.

Answer 1

(i) Frequency or the number of waves produced per second

= `"Velocity"/"Wavelength"`

= `24/(20 × 10^-2`

= 120 Hz

(ii) Time = `1/ "frequency"`

= `1/120`

= 8.3 × 10^-3 seconds