Question

The graph shows the amplitude of a passing wave over time in seconds (s). What is the approximate frequency of the wave shown?

A. 0.3 Hz
B. 3 Hz
C. 0.7 Hz
D. 6 Hz

Answer 1

Answer:

a)0.3 Hz

Explanation:

we can observe that for completing one wave the time taken is 3 sec.

frequency= number of waves / one second

= 1/3 Hz

approximately 0.3

Answer 2

The approximate frequency of the wave shown is:

A. 0.3 Hz

• According to the graph,

            The amplitude of the wave = 1 metre

            The time-period of the wave is approximately = 3 secs

• Frequency can be defined as the number of waves can be defined as the inverse fraction of the time taken by the wave to complete one cycle  or the numerical value of complete waves in unit time (acc to the graph).

               = $\frac{1}{time-period}$

              =$\frac{1}{3}$

             = 0.3 Hz (approximately)