Question

If a wave generator produces 10 pulses per second and the speed of the waves is 300 m/s, what is the wavelength of the waves? What happens to the wavelength if the frequency of the pulses is increased?

Answer 1

Given:

The frequency of the generator is f = 10 pulses per second

The speed of the wave is v = 300 m/s

Required: The wavelength of the wave

The change in wavelength if the frequency of the pulses is increased.

Explanation:

The wavelength of the wave can be calculated by the formula

$\lambda=\frac{v}{f}$

On substituting the values, the wavelength of the wave will be

$\begin{gathered} \lambda=\frac{300}{10} \\ =\text{ 30 m} \end{gathered}$

The wavelength is inversely proportional to the frequency of the wave, so the wavelength will decrease if the frequency of the pulses is increased.