An isosceles prism of angle 120^(@) has ...

An isosceles prism of angle `120^(@)` has a refractive index of 1.44. Two parallel monochromatic rays enter the prism paralled to each other in air as shown. The rays emerging from the opposite faces

are parallel to each other

are diverging

make an angle 2 `sin^(-1)(0.720` with each

make an angle 2`[sin^(-1)(0.72) - 30^(@)]` with each other.

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