Question

At what angle should a ray of light be incident on the face of an equatorial prism,so that it just suffers total internal reflection at the other face?The refractive index of the material of the prism is 1.5

Answer 1

Answer:

sin c =  1/μ    

=  

1/1.524

​=0.65

or c=40∘  30'

r=19∘  30'

 

=[180∘  −120∘  −40∘  30']

μ=  sini/sinr

​  

or sini = 1.524 sin 19∘  30'  

=1.524(.3340)=0.5

ori =30∘