Question

The time taken by a crest to travel a distance $$\lambda$$ is ______.

Options

• T

• $$\dfrac{T}{2}$$

• $$\dfrac{T}{4}$$

• $$\dfrac{T}{8}$$

Answer 1

The time taken by a crest to travel a distance $$\lambda$$ is T.

Explanation:

The time period \(T\) is the time taken by the wave to travel one wavelength \(\lambda\). Therefore, a crest travels a distance \(\lambda\) in time \(T\). Times \(T/2\), \(T/4\), and \(T/8\) correspond to smaller fractions of one wavelength.