Physics
Which colour of light has higher critical angle ? Red light or green light.
Refraction Plane Surfaces
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Answer
As we know, the relation between critical angle and refractive index is
where, c is critical angle and μ is refractive index.
As μ for red light is less as compared to that for green light and μ and c are inversely related.
Hence, the critical angle of red light is higher than that of green light.
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