Answer : (D) The wave has traveled 97.2 cm in 1 second
Explanation :
It is given that,
Wavelength of the wave is, \(\lambda=32.4\ cm\)
Frequency of the wave, \(u=3\ Hz\)
We know that the number of oscillation produced per second by a wave is called the frequency of the wave.
i.e.
\(u=\dfrac{1}{T}\)
Where,
T is the time period of the wave
\(T=\dfrac{1}{3}\ s\)
Speed of the wave is given by :
\(s=\dfrac{\lambda}{t}\)
\(s=\dfrac{32.4\ cm}{\dfrac{1}{3}\ s}\)
\(s=97.2\ cm/s\)
So, the correct option is (D)" The wave has traveled 97.2 cm in 1 second ".
Hence, this is the required solution.
