Question

Why do polarized sun glasses block out some reflected light (glare), but do not block out light that has not been reflected?

• A. Some reflected light is at least partially polarized
• B. Some reflected light changes frequency
• C. Some reflected light is red-shifted
• D. Some reflected light is at least partially diffracted
• E. Some reflected light splits into multiple photons

Answer 1

The correct option is A Some reflected light is at least partially polarized

When ordinary (unpolarised) light is reflected from a surface , it gets partial polarisation , it means some of the electric vectors in some planes are cut-off . When this partially polarized light is incident on polarized glasses , glass acts as an analyser and therefore block out some reflected light .