Question

7) A light ray is travelling at 1.24 x 10⁸ m/s through a medium and hits the interface of a second medium. The critical angle for total internal reflection is 46 degrees for this case. If the mediums were switched, and light was traveling now from the second medium to the first medium (same two mediums, however), what would be the incident angle needed, in degrees, with the respect to the normal, if the refracted angle is 25 degrees?

Answer 1