Mathematically prove that when a light ray passes through a rectangular glass slab, the incident ray is parallel to the emergent ray. Illustrate with a diagram.

Asked by  | 28th Jan, 2012, 05:24: PM

Expert Answer:

In triangle GBC,
so r1=r2
as ?=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  | 30th Jan, 2012, 02:52: PM

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