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A ray of light strikes the midpoint of one face of an equiangular (60°–60°–60°) glass prism...

A ray of light strikes the midpoint of one face of an equiangular (60°–60°–60°) glass prism (n = 1.5) at an angle of incidence of 32.8°.

(a) Trace the path of the light ray through the glass, and find the angles of incidence and refraction at each surface.
First surface:

θincidence =

θrefraction

Second surface:

θincidence

=
θrefraction =

(b) If a small fraction of light is also reflected at each surface, find the angles of reflection at the surfaces.

θreflection=
θreflection =
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