can you help me with these two? urses/1157210/quizzes/1887138/take Dez pours a l

Question

can you help me with these two? urses/1157210/quizzes/1887138/take Dez pours a liquid (n 1.321) into a container made of glass (n -1.491). The light ray in glass incident on the glass-to-liquid boundary makes an angle of 44.1o with the normal. Find the ange of the corresponding refracted ray. Give your answer, to one decimal place, in degrees) Question 4 1 pts A beam of light in air is incident on the surface of a rectangular block of clear plastic (n 1.55). If the velocity of the beam before it enters the plastic is 3.00 108 m/s, what is its velocity inside the block? 3.00 108 m/s 1.94.10B m/s 2.01-108 m/s

Explanation / Answer

3. Using snell's law

Sin i/sin r= 1.491/1.321

r= 38.1 °

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4.

Velocity of light in medium= c/u= 3*10^8/1.55= 1.94*10^8 m/s

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Comment in case any doubt.. good luck

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