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JAMB Physics 1981 Question 22

Question 22

Waves

The wave motion shown (Fig. 3) has a frequency of

Diagram for this question
  1. A.0.1 Hz
  2. B.0.2 Hz
  3. C.5 Hz
  4. D.10 Hz
  5. E.100 Hz
Show the answer and explanation

Answer: C (5 Hz)

Explanation

From the graph one complete wave takes 0.2 s, so f = 1/T = 1/0.2 = 5 Hz.