In Exercise 47, if the angle of incidence is too small, light will not emerge from the other side of the prism. How could this happen? Calculate the minimum angle of incidence for the red light so that it does not emerge from the other side of the prism.
In exercise If the index of refraction of red light of the prism is 1.400, at what angle θ does the beam emerge from the other face of the prism?