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Solution: The speed of light in a material is 0.41  c. What is the critical angle of a light ray at the interface between the material and a vacuum? a) 19° b) 22° c) 17° d) 24°

Problem

The speed of light in a material is 0.41  c. What is the critical angle of a light ray at the interface between the material and a vacuum?

a) 19°

b) 22°

c) 17°

d) 24°