Exam-style question
Try this first
What effect does polarisation have on light waves?.
- A.It increases their speed
- B.It reduces their intensity
- C.It allows them to travel through opaque materials
- D.It changes their wavelength
Model answer
What a good answer should say
- It reduces their intensity.
- the correct option
Explanation
Why this works
The correct answer is It reduces their intensity. This supports Explain why polarisation is evidence for transverse waves.
in Longitudinal and transverse 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
No common mistake is linked to this question yet.