(i)The frequency or number of waves produced per second
= wavelength / velocity
=\(\frac{24}{20}\times {{10}^{-2}}\)
=120
(ii) Time it takes for one wave to form = 1 / frequency
= 1/120
= \(8.3\times {{10}^{-3}}\) seconds
(i)The frequency or number of waves produced per second
= wavelength / velocity
=\(\frac{24}{20}\times {{10}^{-2}}\)
=120
(ii) Time it takes for one wave to form = 1 / frequency
= 1/120
= \(8.3\times {{10}^{-3}}\) seconds