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?

Light is reflected from a glass coffee table. When the angle of incidence is 56.0°, the reflected light is completely polarized parallel to the surface of the glass. What is the index of refraction of the glass?

The index of refraction of carbon tetrachloride is 1.46. The speed of light in this material is:
A) less than 1.00 x 10^6 km/s
B) between 1.00 x 10^6 and 2.00 x 10^6 km/s
C) between 2.00 x 10^6 and 3.00 x 10^6 km/s
D) greater than 3.00 x 10^6 km/s

A parallel beam of light is incident on the surface of a transparent hemisphere of index 2.0 at an angel of 45 degrees to the axis. Show whether or not the central ray in the beam is totally reflected at the plane surface and find the position of the image formed by refraction at the first surface and the plane surface. Indicate

Two very narrow rays of light of different colors are incident on a glass plate at different angles. The difference in angle is exaggerated for the sake of clarity. It so happens that the two rays coalesce into one ray on entry into the glass as shown in the diagram.
a) Which of the two rays has the higher index of refractio

A spotlight on a boat is 2.5 m above the water and the light strikes the water at a point that is 8.0 m horizontally displaced from the spotlight. The depth of the water is 4.0 m. Determine the distance d, which locates the point where the light strikes the bottom.
2.5 m
8 m

A ray of light traveling through a gas (n = 1.00) enters a solid (n = 1.55) at an an angle of 35 degrees and then enters a liquid (n = 1.55). At what angle does the light enter the liquid?

A solid glass sphere of radius R and index 1.50 is silvered over one hemisphere. A small object is located on the axis of the sphere at a distance 2R from the pole of the un-silvered hemisphere. Find the position of the final image formed by the refracting and reflecting surfaces.
My approach to this question had the rays in

Given a hemisphere of radius r defined by:
x = r*cos(a)
y = r*sin(a) where -pi/2 <= a <= pi/2
If the hemisphere describes a boundary between two interfaces having indices of refraction n (outside the hemisphere) and m (inside the hemisphere) and assuming the light strikes the hemisphere at point {x,y} with angle a (meanin

Please help with the following problem.
A multiple ray projector, with the rays parallel, strikes the prism from various angles and sides. How would you obtain total internal reflection?
If you set it up so the incoming rays are turned through an 180 degree angle, what would the ray diagram look like (draw diagram)?
Is it