Exam-style question
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How does polarisation demonstrate that a wave is transverse?.
- A.Transverse waves can be reflected
- B.Transverse waves can be refracted
- C.Transverse waves oscillate perpendicular to the direction of travel
- D.Transverse waves have a higher frequency
Model answer
What a good answer should say
- Transverse waves oscillate perpendicular to the direction of travel
Explanation
Why this works
The cause of polarisation is that transverse waves oscillate perpendicular to their direction of travel. This mechanism allows for the alignment of the wave's vibrations in a single plane, leading to the effect of polarisation.
The consequence is that this characteristic confirms the nature of the wave as transverse, distinguishing it from longitudinal waves.
Common mistake
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