prove that while refraction through a rectangular glass slab the incident ray is parallel to the emergent ray

Asked by  | 10th Mar, 2013, 06:32: PM

Expert Answer:

In triangle GBC,
r1+90-r2=90
so r1=r2
as n =sin i/sin r1 =sin r2/sin e    as r1=r2
so i=e
so for, CF and DE, and intercector CD
angle BCF=angle CDE=corresponding angle
so CF parallel to DE.

Answered by  | 11th Mar, 2013, 03:34: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.