When rays of light are incident on a glass slab, then the incident ray and emergent ray are ____ to each other.

When light passes through glass slab, the incident ray and emergent ray are ……………………. .

When light passes thorough glass slab,the incidnet ray and emergent 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.

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.

Show that for refraction of light through a parallel glass slab, the incident ray and the emergent ray are parallel to each other. Or, With the help of a diagram show how in case of a rectangular glass slab, when light is refracted by the two parallel faces of the slab, deviation between angle of incidence and angle of refractive is zero.

A ray of monochromatic light is incident from air on a glass slab. Name the two rays that are parallel to each other.

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