Question

RELATION BETWEEN REFRACTIVE INDEX AND CRITICAL ANGLE. ​

Answer 1

The ratio of velocities of a light ray in the air to the given medium is a refractive index. Thus, the relation between the critical angle and refractive index can be established as the Critical angle is inversely proportional to the refractive index...

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Answer 2

c= critical angle

sinc= nr/nd

where nr= refractive index of rarer medium and

nr=refractive index of denser medium