Draw the refraction of light through a rectangular glass slab. What is the cause of the refraction of light through a rectangular glass slab?
The cause of reflection in a rectangular slab- Refraction occurs because light travels at different speeds in different media. When light enters the glass slab (denser medium) from air (rarer medium), it slows down and bends towards the normal. When it exits from glass to air, it speeds up and bends away from the normal.