A ray of light in water index n1 is incident on its surface
A ray of light in water (index n1) is incident on its surface (with air) at the critical angle for total internal reflection. Some oil (index n2) is now floated on the water. Determine the angle between the ray in the oil and the normal?
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a ray of light in water index n1 is incident on its surface with air at the critical angle for total internal
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