A point source of light is submerged 2.2 m below the surface of a lake and emits rays in all directions. On the surface of the lake, directly above the source, the area illuminated is a circle. What is the maximum radius that this circle could have?
n1 * sin(theta1) = n2 * sin(theta2)
=>1 = 1.33 * sin(theta2) (total ...
Detailed solution to a refraction of light with a point source question. The maximum radius of the circle is also determined.