A prism gives the same deviation 40° for incidence angles 50° and 60°. For the first case, the emergence angle is:
Options

Question

A prism gives the same deviation 40° for incidence angles 50° and 60°. For the first case, the emergence angle is:

G1 Physics · Accepted Answer

δ=i+e-A. By reversibility, the paired incidence angles for the same path are i and e. Thus e=60° for the 50° incidence case.