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Three slabs of different types of glass of uniform thickness are in contact with one another.The materials have indices of refraction ,
,and
where
and
.A beam of light starting in air is incident on the surface of material 1 at an angle of incidence of 35 .The beam continues through material 1,material 2,and material 3,finally emerging into the air again.In which of materials 1,2,or 3,or air (when the beam emerges back into the air) does the beam experience the largest angle of refraction?
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