Question

Figure 17-1 shows a wave movement during 1 second. What is the frequency of this wave?

A. 2 hertz
B. 2 meters/second
C. 0.5 second
D. 1 hertz

Answer 1

1. A 2 hertz

2. B speed = wavelength • frequency

3. D The vertical distance from a crest to the rest position

Answer 2

Based on the given figure above, the correct answer would be option A. 2 hertz. The frequency of the wave movement during 1 second is 2 hertz. Since 2cycles/second is equal to 2 hertz. You can also get this answer by using the wave-speed equation which is c=νλ. Hope this answers your question.