2. Suppose we want to induce the total internal reflection of light in this system by changing either material A, B or adding another material below material B. Which of the following changes would induce total internal reflection? A. Adding a layer of material A below material B. B. Replacing material A with material B. C. Removing material B. D. None of the above.
2. Suppose we want to induce the total internal reflection of light in this system by changing either material A, B or adding another material below material B. Which of the following changes would induce total internal reflection? A. Adding a layer of material A below material B. B. Replacing material A with material B. C. Removing material B. D. None of the above.
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Answer 2 only.
Transcribed Image Text:For the next two questions, as seen in the image below, two materials A (na = 1.25) and
B ( 1.75) are stacked (ray angles for illustration only).
A
B
1. Monochromatic light hits A at an angle theta, -30° from the normal. What is the angle of
refraction of light that gets to come out from B?
A. None (total internal reflection occurs at B)
B. 60°
C. 30°
D. 15°
2. Suppose we want to induce the total internal reflection of light in this system by changing
either material A, B or adding another material below material B. Which of the following
changes would induce total internal reflection?
A. Adding a layer of material A below material B.
B. Replacing material A with material B.
C. Removing material B.
D. None of the above.
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