Refraction Laws#!#Refractiom through Glass slab

Prove that the angle of emergence and angle of incidence are equal in case of refraction through a glass slab

In the given figure, a wavefront AB moving in air is incident on a plane glass surface XY, Its position CD after refraction through a glass slab is showin in gigure. The ratio of width of wavefront AB to the refracted wavefront CD is

In the adjoining figure, a wavefront AB moving in air is incident on a plane glass surface XY. Its position CD, after refraction through a glass slab is shown also along with the normals drawn at A and D. The refractive index of glass with respect to air will be equal to

In refraction of light through a glass slab , the directions of the incident ray and the refracted ray are "…..............."

During refraction of light through the glass slab, incident ray and emergent ray are perpendicular to each other. True/false

'During refraction of light through the glass slab, incident ray and emergent ray are parallel to each other.' Explain.

Complete the following ray diagram to show refraction of light through a glass slab and label the incident ray, refracted ray and emergent ray.

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