Exam-style question
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What is the relationship between the number of nodes and the harmonic in a stationary wave?.
- A.The number of nodes equals the harmonic number
- B.The number of nodes is one less than the harmonic number
- C.The number of nodes is two less than the harmonic number
- D.There is no relationship
Model answer
What a good answer should say
- The number of nodes is one less than the harmonic number
Explanation
Why this works
In a stationary wave, the number of nodes is always one less than the harmonic number. For example, the first harmonic has one node, the second harmonic has two nodes, and so forth.
Common mistake
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