Polaroid sunglasses reduce glare because:

  1. they reflect sunlight
  2. they magnify the image
  3. they absorb all light
  4. they block the polarized light reflected from horizontal surfaces
Answer

D) they block the polarized light reflected from horizontal surfaces

Reflected glare is mostly horizontally polarized. SLO P-11-D-05 · Understanding

Physics MCQ · More Polarization MCQs · Practise