Exam-style question
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How can you determine the frequency of a wave from a displacement-time graph?.
- A.By measuring the distance between two consecutive crests
- B.By counting the number of cycles in a given time period
- C.By calculating the area under the graph
- D.By measuring the maximum displacement
Model answer
What a good answer should say
- By counting the number of cycles in a given time period
Explanation
Why this works
The evidence indicates that frequency is defined as the number of complete cycles that occur in a unit of time. This means that by counting the cycles in the displacement-time graph over a specific time interval, one can determine the frequency.
Thus, this method is essential for analyzing wave properties.
Common mistake
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