Question

what will be the part of reflecting Re animals day if two glass slab kept attached to each other​

Answer 1

yes . It is parallel to incident ray.

when light ray is enter in glass slab,it gets bend due to refraction of light.Refracted ray also try to escape out from slab so it fall on another side of slab and refract ,then emergent ray is came in manner with parallel to incident ray.

Answer 2

If both pieces of glass have the same refractive index and have parallel surfaces, the rays in and out will be parallel...