Question
Thu December 22, 2011 By:

An isosceles prism of angle 120 has a refractive index 1.44. Two parallel monochromatic rays enter the prism parallel to each other in air. The rays emerge from the opposite faces (A) are parallel to each other (B) are diverging (C) make an angle 2 [sin?1(0.72) ? 30°] with each other (D) make an angle 2 sin ?1(0.72) with each other

Expert Reply
Fri December 23, 2011
from simple geometry, i=30
so  r=sin-1 (1.44/2)     comes from  sin r/sin  i    =1.44
further has to be solved from applying simple geometry
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