Question #23405
About how much light is reflected from a glass or water surface if the incident light is perpendicular to the surface?
Answer a. No light is reflected.
b. Less than 1%.
c. About 5%.
d. About 30%.
Answer a. No light is reflected.
b. Less than 1%.
c. About 5%.
d. About 30%.
Expert's answer
The reflection coefficient for reflection at normal incidence for glass (n=1.5) - air (n=1) interface is equal to 4% (from the Fresnel
equations).
so the answer is c - About 5%
equations).
so the answer is c - About 5%
