Question

A Ray of light incident normally on one of the equal side of an isosceles right angled glass prism of refractive index 1.5. find the value of the angle of incidence in the first and second surface​

Answer 1

when the ray is incident normally on one of the equal surfaces, the angle of incidence is 0 degree. when the light ray refracts and is incident on the next surface, the angle of incidence w.r.t. the normal is 45 degrees