Question
Thu February 14, 2013 By: Akriti

Sir, when a ray of light is incident on the surface of a glass slab, is the angle of incidence equal to the angle of emergence? If yes, then prove it.

Expert Reply
Fri February 15, 2013
As normal drawn at A and C points are parallel to each other,
so  r1=r2
 
now:
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