Question: The end faces of a cylindrical glass rod (n = 1.54) are perpendicular to the sides. Show that a light ray entering an end face

The end faces of a cylindrical glass rod (n = 1.54) are perpendicular to the sides. Show that a light ray entering an end face at any angle will be totally internally reflected inside the rod when the ray strikes the sides. Assume the rod is in air. What if it were in water?

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If total internal reflection fails at all it fails for a 90 So assume a 90 Then n sin n sin 3 beco... View full answer

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