A light ray passes from air through a thin plastic slab (n = 1.3)with parallel sides.If the ray in air makes an angle of 45 $\degree$with the normal after leaving the slab,what is the angle of incidence for the ray in air as it impinges upon the other side of the slab?
A)33 $\degree$
B)45 $\degree$
C)67 $\degree$
D)58.5 $\degree$

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The Answer of A light ray passes from air through a thin plastic slab (n = 1.3)with parallel sides.If the ray in air makes an angle of 45 $\degree$with the normal after leaving the slab,what is the angle of incidence for the ray in air as it impinges upon the other side of the slab?
A)33 $\degree$
B)45 $\degree$
C)67 $\degree$
D)58.5 $\degree$

A Light Ray Passes from Air Through a Thin Plastic °\degree°

A Light Ray Passes from Air Through a Thin Plastic $\degree$