Question: You shine a laser pointer at an angle of (30^{circ}) from the normal onto the surface of a thick block of glass for which the

You shine a laser pointer at an angle of $30^{\circ}$ from the normal onto the surface of a thick block of glass for which the index of refraction is $n=1.5$.

(a) What is the angle of refraction of the laser beam?

(b) Draw a diagram showing the normal, the surface of the block, and the incident and refracted wavefronts and rays.

(c) How would the angles in parts $a$ and $b$ change if the incident angle were $45^{\circ}$ ?

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