Question

4 what is the frequency of this sine wave?
a 1 hz
b 5 hz
c 10 hz
d 20 hz

Explanation:

Step1: Recall frequency definition

Frequency is the number of cycles per second.

Step2: Count cycles in 1 - second

From the graph, there are 5 cycles in 1 second.

Answer:

B. 5 Hz