A light ray passes through a rectangular slab of transparent material having index of refraction $n=2,$ as shown in the figure $($Figure $1).$ The incident angle is ${}_0=60\mathrm{.}0.$

Figure

$1$ of $1$

Part C

Determine ${}_c.$

Express your answer in degrees.

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Part D

What is the relationship between the directions of the incident ray and the emerging ray?

They are skew.

They are parallel.

They are perpendicular.

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