The frequency of the wave in the diagram above is
-
A.
0.17 Hz -
B.
0.25 Hz -
C.
1.57 Hz -
D.
1.05 Hz
Correct Answer: Option B
Explanation
Generally, period T = 1/f(reciprocal of frequency).
=> f = 1/T
And from the diagram, period T = 4s
∴ frequency, f = 1/T = 1/4 = 0.25 Hz