[Homework Home > Optics_Snell's_Law]

 [1] Two people stand d= m away from a large plane mirror. They are spaced x= m apart. At what angle does one of them have to shine the flashlight on the mirror so that the reflected beam shines on the other person?

 [2] A coin is at the bottom of a swimming pool filled with liquid d= m deep. The liquid has an index of refraction of nL= none (water has nL=1.3). How deep does the coin appear to be to someone looking at it from the air above the water?

 [3] A beam of light traveling in water strikes the surface of a transparent object at an angle of \theta1= o . If the angle of refraction in the material is \theta2= o , what is the index of refraction of the material.

 [4] Light passes from medium A to medium B at an angle of incidence of \theta1= o . The index of refraction of A is " " times that of B. What is the angle of refraction? What is the ratio of the speed of light in B to the speed of light in A? At what angle of incidence would the light be totally internally reflected?