Exam-style question
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In a resonance experiment, if the driving frequency is gradually increased, what is observed?.
- A.Amplitude increases, then decreases after reaching a peak
- B.Amplitude remains constant
- C.Amplitude decreases continuously
- D.Frequency has no effect on amplitude
Model answer
What a good answer should say
- Amplitude increases, then decreases after reaching a peak
Explanation
Why this works
As the driving frequency approaches the natural frequency, the amplitude increases until it reaches a maximum at resonance, after which it decreases due to damping.
Common mistake
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