Exam-style question
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In a stationary wave, what happens at the nodes?.
- A.Maximum displacement occurs
- B.Minimum displacement occurs
- C.Energy is transferred
- D.Waves are reflected
Model answer
What a good answer should say
- Minimum displacement occurs.
- the correct option
Explanation
Why this works
The correct answer is Minimum displacement occurs. This supports Explain how stationary waves form from two progressive waves.
in Superposition and stationary waves because it uses the required wave or optics principle directly. The other options are less suitable because they confuse a different wave quantity, diagram feature, or boundary condition.
Common mistake
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