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Solutions:
a) 38.8o b) 41.8o
c) 51.2o . The ray does not emerge as total internal reflection has occurred. The angle of incidence is greater than critical angle and the light is traveling from a denser towards a less dense medium.
Click here to view the video tutorial for working and explanation for (a) and (b).
Click here to view the video tutorial for working and explanation for (c) and (d).
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