Optics 2 Question 15
15. A ray of light from a denser medium strikes a rarer medium at an angle of incidence (see figure). The reflected and refracted rays make an angle of with each other. The angles of reflection and refraction are and . The critical angle is
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 15. (a)
Solution:
Applying Snell’s law,
or