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Tutorial 1 - What is light and how to manipulate it

Homework questions from Tutorial #1
1.You ride your bike on the pavement & the beach. On the pavement you can ride at 10 miles/hour using a moderate pace. Riding at the same pace on the beach you can go 6.5 miles/hr. Next you ride your bike from the pavement onto the beach. You approach this interface with a 30° angle. What angle will your bike exit onto the beach? (Hint: Use snell’s law)
2.Light goes through a prism with a 18.6° wedge angle and an index of 2.0. How much will the light ray be deviated.

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Solutions posted here.