Question

a ray of light is incident on one face of a transparent slab of thickness 15 cm .The angle of incident is 60 if the lateral displacement of the ray on emerging from the plane is 5root3 the refractive index of the slap is

Answer 1

Answer:

The angle between the incident ray of light and its reflected ray on a plane mirror is 66 degree. the angle of incident ray makes with the plane mirror is