Optics total internal reflection

i doing my home work.there i found a question like this.i need o know the solution for this. show that it is possible to use a 45-45-90 triangular prism of crown glass to make a perfect perfect reflector of light. (n of crown glass is 1.52) (critical angle for total internal reflection in crown glass is 41.1) thank you
Question asked by: jayani

Asked on: 08 Oct 2008

Have a look here for a detailed examination of total internal reflection:

homepage.mac.com/cbakken/obookshelf/total.html
By: knowitall
Replied at: 19 Oct 2008
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