Ray Optics

A ray of light travelling through glass of refractive index \(\sqrt{2}\) is incident on glass-air boundary at an angle of incidence \(45^{\circ}\). If refractive index of air is 1 , then the angle of refraction will be \(\left[\sin 45^{\circ}=\frac{1}{\sqrt{2}}, \sin 90^{\circ}=1\right]\)