• # question_answer 10) A triangular prism of glass is shown in figure, A ray incident normal to one face is totally reflected. If $\theta$ is $45{}^\circ$, then index of refraction of the glass is-                                    A) less than 1.41    B) equal to 1.41       C) greater than 1.41D) None of these

$45{}^\circ >{{\theta }_{c}}$