Question

Draw a ray diagram of refraction of light in a glass slab
​

Answer 1

Hope it's help you...

Answer 2

In this case i > r. But when the ray of light is passing from glass to air, that is, from a denser medium to a rarer medium the refracted ray bends away from the normal. In this case r > i. The emergent ray, O1E which is nothing but the refracted ray emerging out of the glass slab is parallel to the incident ray.

Hope this helps you

plz mark my answer as brainlist