question_answer

A ray of light travelling inside a rectangular glass. block of refractive index \[\sqrt{2}\] is incident on the glass-air interface at an angle of incidence of \[{{45}^{\circ }}\]The refractive index of air is one. Under the these conditions the ray will

A)  emerge into the air without any deviation

B)  be reflected back into glass

C)  be absorbed

D)  emerge into the air with an angle of refraction equal to \[90{}^\circ \]